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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1740621.pdf | 432 kB | Shaun Ewing | Dec 24, 1929 00:00 |
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US-1740621-A // Suppression of echoes and singing in four-wire circuits // Nyquist Harry // American Telephone & Telegraph | |||
| Version 1 (current) | 432 kB | Shaun Ewing | Dec 24, 1929 00:00 | US-1740621-A // Suppression of echoes and singing in four-wire circuits // Nyquist Harry // American Telephone & Telegraph | ||||
| PDF File 1740856.pdf | 962 kB | Shaun Ewing | Dec 24, 1929 00:00 |
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US-1740856-A // Volume regulation in two-way telephone circuits // Herman Joseph ; Wright Sumner B. // American Telephone & Telegraph | |||
| Version 1 (current) | 962 kB | Shaun Ewing | Dec 24, 1929 00:00 | US-1740856-A // Volume regulation in two-way telephone circuits // Herman Joseph ; Wright Sumner B. // American Telephone & Telegraph | ||||
| PDF File 1741272.pdf | 668 kB | Shaun Ewing | Dec 31, 1929 00:00 |
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US-1741272-A // Telephone system // Bascom Henry M. // American Telephone & Telegraph | |||
| Version 1 (current) | 668 kB | Shaun Ewing | Dec 31, 1929 00:00 | US-1741272-A // Telephone system // Bascom Henry M. // American Telephone & Telegraph | ||||
| PDF File 1741356.pdf | 131 kB | Shaun Ewing | Dec 31, 1929 00:00 |
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US-1741356-A // Protective device for electric circuits // Bascom Henry M. // American Telephone & Telegraph | |||
| Version 1 (current) | 131 kB | Shaun Ewing | Dec 31, 1929 00:00 | US-1741356-A // Protective device for electric circuits // Bascom Henry M. // American Telephone & Telegraph | ||||
| PDF File 1741363.pdf | 436 kB | Shaun Ewing | Dec 31, 1929 00:00 |
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US-1741363-A // Piezo-electric interference eliminator // Green Estill I. // American Telephone & Telegraph | |||
| Version 1 (current) | 436 kB | Shaun Ewing | Dec 31, 1929 00:00 | US-1741363-A // Piezo-electric interference eliminator // Green Estill I. // American Telephone & Telegraph | ||||
| PDF File 1741375.pdf | 151 kB | Shaun Ewing | Dec 31, 1929 00:00 |
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US-1741375-A // Current-equalizing device // Niles Eliot W. ; Edwards William H. // American Telephone & Telegraph | |||
| Version 1 (current) | 151 kB | Shaun Ewing | Dec 31, 1929 00:00 | US-1741375-A // Current-equalizing device // Niles Eliot W. ; Edwards William H. // American Telephone & Telegraph | ||||
| PDF File 1741926.pdf | 707 kB | Shaun Ewing | Dec 31, 1929 00:00 |
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US-1741926-A // Compound loading system // French Norman R. // American Telephone & Telegraph | |||
| Version 1 (current) | 707 kB | Shaun Ewing | Dec 31, 1929 00:00 | US-1741926-A // Compound loading system // French Norman R. // American Telephone & Telegraph | ||||
| PDF File 1742243.pdf | 275 kB | Shaun Ewing | Jan 07, 1930 00:00 |
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US-1742243-A // Cable clamp and bridle ring // Fish Lewin B. // American Telephone & Telegraph | |||
| Version 1 (current) | 275 kB | Shaun Ewing | Jan 07, 1930 00:00 | US-1742243-A // Cable clamp and bridle ring // Fish Lewin B. // American Telephone & Telegraph | ||||
| PDF File 1742251.pdf | 544 kB | Shaun Ewing | Jan 07, 1930 00:00 |
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US-1742251-A // Amplifying system // Holden William H. T. // American Telephone & Telegraph | |||
| Version 1 (current) | 544 kB | Shaun Ewing | Jan 07, 1930 00:00 | US-1742251-A // Amplifying system // Holden William H. T. // American Telephone & Telegraph | ||||
| PDF File 1742252.pdf | 443 kB | Shaun Ewing | Jan 07, 1930 00:00 |
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US-1742252-A // Piezo-electric frequency eliminator // Holden William H. T. // American Telephone & Telegraph | |||
| Version 1 (current) | 443 kB | Shaun Ewing | Jan 07, 1930 00:00 | US-1742252-A // Piezo-electric frequency eliminator // Holden William H. T. // American Telephone & Telegraph | ||||
| PDF File 1742291.pdf | 394 kB | Shaun Ewing | Jan 07, 1930 00:00 |
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US-1742291-A // Selective signaling system // Thompson George K. // American Telephone & Telegraph | |||
| Version 1 (current) | 394 kB | Shaun Ewing | Jan 07, 1930 00:00 | US-1742291-A // Selective signaling system // Thompson George K. // American Telephone & Telegraph | ||||
| PDF File 1742293.pdf | 674 kB | Shaun Ewing | Jan 07, 1930 00:00 |
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US-1742293-A // Tape cutting and pasting device // Watson Edward F. ; Swezey Burdette S. // American Telephone & Telegraph | |||
| Version 1 (current) | 674 kB | Shaun Ewing | Jan 07, 1930 00:00 | US-1742293-A // Tape cutting and pasting device // Watson Edward F. ; Swezey Burdette S. // American Telephone & Telegraph | ||||
| PDF File 1742927.pdf | 652 kB | Shaun Ewing | Jan 07, 1930 00:00 |
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US-1742927-A // Telephone-exchange system // Nicoll Robert I.d. ; Davis Richard C. ; Nostitz Erich Von // Bell Telephone Labor Inc ; American Telephone & Telegraph | |||
| Version 1 (current) | 652 kB | Shaun Ewing | Jan 07, 1930 00:00 | US-1742927-A // Telephone-exchange system // Nicoll Robert I.d. ; Davis Richard C. ; Nostitz Erich Von // Bell Telephone Labor Inc ; American Telephone & Telegraph | ||||
| PDF File 1743132.pdf | 1.21 MB | Shaun Ewing | Jan 14, 1930 00:00 |
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US-1743132-A // Equalization of carrier systems // Green Estill I. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.21 MB | Shaun Ewing | Jan 14, 1930 00:00 | US-1743132-A // Equalization of carrier systems // Green Estill I. // American Telephone & Telegraph | ||||
| PDF File 1743141.pdf | 1.20 MB | Shaun Ewing | Jan 14, 1930 00:00 |
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US-1743141-A // Equalization of carrier systems // Ilgenfritz Lester M. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.20 MB | Shaun Ewing | Jan 14, 1930 00:00 | US-1743141-A // Equalization of carrier systems // Ilgenfritz Lester M. // American Telephone & Telegraph | ||||
| PDF File 1743180.pdf | 828 kB | Shaun Ewing | Jan 14, 1930 00:00 |
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US-1743180-A // Picture-transmitting system // Abraham Leonard G. // American Telephone & Telegraph | |||
| Version 1 (current) | 828 kB | Shaun Ewing | Jan 14, 1930 00:00 | US-1743180-A // Picture-transmitting system // Abraham Leonard G. // American Telephone & Telegraph | ||||
| PDF File 1743245.pdf | 535 kB | Shaun Ewing | Jan 14, 1930 00:00 |
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US-1743245-A // Apparatus for spraying liquids // Smith Temple C. // American Telephone & Telegraph | |||
| Version 1 (current) | 535 kB | Shaun Ewing | Jan 14, 1930 00:00 | US-1743245-A // Apparatus for spraying liquids // Smith Temple C. // American Telephone & Telegraph | ||||
| PDF File 1743260.pdf | 1.05 MB | Shaun Ewing | Jan 14, 1930 00:00 |
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US-1743260-A // Means and method for maintaining constant transmission efficiency // Zinn Manvel K. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.05 MB | Shaun Ewing | Jan 14, 1930 00:00 | US-1743260-A // Means and method for maintaining constant transmission efficiency // Zinn Manvel K. // American Telephone & Telegraph | ||||
| PDF File 1743588.pdf | 1.22 MB | Shaun Ewing | Jan 14, 1930 00:00 |
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US-1743588-A // Carrier transmission system for printing telegraphy // Affel Herman A. ; Hamilton Baxter P. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.22 MB | Shaun Ewing | Jan 14, 1930 00:00 | US-1743588-A // Carrier transmission system for printing telegraphy // Affel Herman A. ; Hamilton Baxter P. // American Telephone & Telegraph | ||||
| PDF File 1744031.pdf | 420 kB | Shaun Ewing | Jan 21, 1930 00:00 |
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US-1744031-A // Measurement of active-balance components // Abraham Leonard G. // American Telephone & Telegraph | |||
| Version 1 (current) | 420 kB | Shaun Ewing | Jan 21, 1930 00:00 | US-1744031-A // Measurement of active-balance components // Abraham Leonard G. // American Telephone & Telegraph |
