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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1619060.pdf | 371 kB | Shaun Ewing | Mar 01, 1927 00:00 |
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US-1619060-A // System of multifrequency circuits // Deardorff Ralph W. // American Telephone & Telegraph | |||
| Version 1 (current) | 371 kB | Shaun Ewing | Mar 01, 1927 00:00 | US-1619060-A // System of multifrequency circuits // Deardorff Ralph W. // American Telephone & Telegraph | ||||
| PDF File 1619058.pdf | 441 kB | Shaun Ewing | Mar 01, 1927 00:00 |
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US-1619058-A // Telephone repeater station // Crisson George // American Telephone & Telegraph | |||
| Version 1 (current) | 441 kB | Shaun Ewing | Mar 01, 1927 00:00 | US-1619058-A // Telephone repeater station // Crisson George // American Telephone & Telegraph | ||||
| PDF File 1618242.pdf | 589 kB | Shaun Ewing | Feb 22, 1927 00:00 |
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US-1618242-A // Time-announcing system // Thompson George K. // American Telephone & Telegraph | |||
| Version 1 (current) | 589 kB | Shaun Ewing | Feb 22, 1927 00:00 | US-1618242-A // Time-announcing system // Thompson George K. // American Telephone & Telegraph | ||||
| PDF File 1618201.pdf | 152 kB | Shaun Ewing | Feb 22, 1927 00:00 |
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US-1618201-A // Substation circuits // Inglis Alfred H. // American Telephone & Telegraph | |||
| Version 1 (current) | 152 kB | Shaun Ewing | Feb 22, 1927 00:00 | US-1618201-A // Substation circuits // Inglis Alfred H. // American Telephone & Telegraph | ||||
| PDF File 1618193.pdf | 1.33 MB | Shaun Ewing | Feb 22, 1927 00:00 |
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US-1618193-A // Telegraph system // Herman Joseph // American Telephone & Telegraph | |||
| Version 1 (current) | 1.33 MB | Shaun Ewing | Feb 22, 1927 00:00 | US-1618193-A // Telegraph system // Herman Joseph // American Telephone & Telegraph | ||||
| PDF File 1617935.pdf | 880 kB | Shaun Ewing | Feb 15, 1927 00:00 |
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US-1617935-A // Multiplex telegraphy by phase discrimination // Affel Herman A. ; Deardorff Ralph W. // American Telephone & Telegraph | |||
| Version 1 (current) | 880 kB | Shaun Ewing | Feb 15, 1927 00:00 | US-1617935-A // Multiplex telegraphy by phase discrimination // Affel Herman A. ; Deardorff Ralph W. // American Telephone & Telegraph | ||||
| PDF File 1617934.pdf | 957 kB | Shaun Ewing | Feb 15, 1927 00:00 |
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US-1617934-A // Carrier telegraph system // Affel Herman A. // American Telephone & Telegraph | |||
| Version 1 (current) | 957 kB | Shaun Ewing | Feb 15, 1927 00:00 | US-1617934-A // Carrier telegraph system // Affel Herman A. // American Telephone & Telegraph | ||||
| PDF File 1617482.pdf | 479 kB | Shaun Ewing | Feb 15, 1927 00:00 |
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US-1617482-A // Intermediate telegraph set for duplex lines // Herman Joseph // American Telephone & Telegraph | |||
| Version 1 (current) | 479 kB | Shaun Ewing | Feb 15, 1927 00:00 | US-1617482-A // Intermediate telegraph set for duplex lines // Herman Joseph // American Telephone & Telegraph | ||||
| PDF File 1617467.pdf | 605 kB | Shaun Ewing | Feb 15, 1927 00:00 |
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US-1617467-A // Radio signalling system // Uphoff Leslie S. // American Telephone & Telegraph | |||
| Version 1 (current) | 605 kB | Shaun Ewing | Feb 15, 1927 00:00 | US-1617467-A // Radio signalling system // Uphoff Leslie S. // American Telephone & Telegraph | ||||
| PDF File 1616892.pdf | 614 kB | Shaun Ewing | Feb 08, 1927 00:00 |
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US-1616892-A // Duplex radio system // Espenschied Lloyd ; Martin De Loss K. // American Telephone & Telegraph | |||
| Version 1 (current) | 614 kB | Shaun Ewing | Feb 08, 1927 00:00 | US-1616892-A // Duplex radio system // Espenschied Lloyd ; Martin De Loss K. // American Telephone & Telegraph | ||||
| PDF File 1616507.pdf | 447 kB | Shaun Ewing | Feb 08, 1927 00:00 |
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US-1616507-A // Means for measuring the margin of operation of telegraph circuits // Pierce Ralph E. // American Telephone & Telegraph | |||
| Version 1 (current) | 447 kB | Shaun Ewing | Feb 08, 1927 00:00 | US-1616507-A // Means for measuring the margin of operation of telegraph circuits // Pierce Ralph E. // American Telephone & Telegraph | ||||
| PDF File 1616499.pdf | 383 kB | Shaun Ewing | Feb 08, 1927 00:00 |
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US-1616499-A // Linear measuring device // Jr. Mark King, // American Telephone & Telegraph | |||
| Version 1 (current) | 383 kB | Shaun Ewing | Feb 08, 1927 00:00 | US-1616499-A // Linear measuring device // Jr. Mark King, // American Telephone & Telegraph | ||||
| PDF File 1616491.pdf | 306 kB | Shaun Ewing | Feb 08, 1927 00:00 |
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US-1616491-A // Headband for telephone receivers // Green Irving W. // American Telephone & Telegraph | |||
| Version 1 (current) | 306 kB | Shaun Ewing | Feb 08, 1927 00:00 | US-1616491-A // Headband for telephone receivers // Green Irving W. // American Telephone & Telegraph | ||||
| PDF File 1615913.pdf | 380 kB | Shaun Ewing | Feb 01, 1927 00:00 |
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US-1615913-A // Radio direction-finding system // Osborne Harold S. // American Telephone & Telegraph | |||
| Version 1 (current) | 380 kB | Shaun Ewing | Feb 01, 1927 00:00 | US-1615913-A // Radio direction-finding system // Osborne Harold S. // American Telephone & Telegraph | ||||
| PDF File 1615911.pdf | 739 kB | Shaun Ewing | Feb 01, 1927 00:00 |
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US-1615911-A // Apparatus and method for regulating attenuation and phase on transmission lines // Nyquist Harry // American Telephone & Telegraph | |||
| Version 1 (current) | 739 kB | Shaun Ewing | Feb 01, 1927 00:00 | US-1615911-A // Apparatus and method for regulating attenuation and phase on transmission lines // Nyquist Harry // American Telephone & Telegraph | ||||
| PDF File 1615896.pdf | 359 kB | Shaun Ewing | Feb 01, 1927 00:00 |
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US-1615896-A // High-frequency signaling system // Affel Herman A. // American Telephone & Telegraph | |||
| Version 1 (current) | 359 kB | Shaun Ewing | Feb 01, 1927 00:00 | US-1615896-A // High-frequency signaling system // Affel Herman A. // American Telephone & Telegraph | ||||
| PDF File 1615259.pdf | 352 kB | Shaun Ewing | Jan 25, 1927 00:00 |
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US-1615259-A // Telephone repeater system // Clark Alva B. // American Telephone & Telegraph | |||
| Version 1 (current) | 352 kB | Shaun Ewing | Jan 25, 1927 00:00 | US-1615259-A // Telephone repeater system // Clark Alva B. // American Telephone & Telegraph | ||||
| PDF File 1615252.pdf | 470 kB | Shaun Ewing | Jan 25, 1927 00:00 |
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US-1615252-A // Electrical wave filter // Zobel Otto J. // American Telephone & Telegraph | |||
| Version 1 (current) | 470 kB | Shaun Ewing | Jan 25, 1927 00:00 | US-1615252-A // Electrical wave filter // Zobel Otto J. // American Telephone & Telegraph | ||||
| PDF File 1615219.pdf | 352 kB | Shaun Ewing | Jan 25, 1927 00:00 |
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US-1615219-A // Telephone switchboard cord terminal test connecter // Franfield John C. // American Telephone & Telegraph | |||
| Version 1 (current) | 352 kB | Shaun Ewing | Jan 25, 1927 00:00 | US-1615219-A // Telephone switchboard cord terminal test connecter // Franfield John C. // American Telephone & Telegraph | ||||
| PDF File 1614555.pdf | 205 kB | Shaun Ewing | Jan 18, 1927 00:00 |
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US-1614555-A // Multiplex telegraph system with magnitude discrimination // Hunter Howard V. // American Telephone & Telegraph | |||
| Version 1 (current) | 205 kB | Shaun Ewing | Jan 18, 1927 00:00 | US-1614555-A // Multiplex telegraph system with magnitude discrimination // Hunter Howard V. // American Telephone & Telegraph |
