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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1778401.pdf | 281 kB | Shaun Ewing | Oct 14, 1930 00:00 |
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US-1778401-A // Relay // Pratt Edward J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 281 kB | Shaun Ewing | Oct 14, 1930 00:00 | US-1778401-A // Relay // Pratt Edward J. // Bell Telephone Labor Inc | ||||
| PDF File 1778386.pdf | 432 kB | Shaun Ewing | Oct 14, 1930 00:00 |
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US-1778386-A // Sound reproducer // Harrison Henry C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 432 kB | Shaun Ewing | Oct 14, 1930 00:00 | US-1778386-A // Sound reproducer // Harrison Henry C. // Bell Telephone Labor Inc | ||||
| PDF File 1778378.pdf | 527 kB | Shaun Ewing | Oct 14, 1930 00:00 |
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US-1778378-A // Telephone system // Butz Edward D. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 527 kB | Shaun Ewing | Oct 14, 1930 00:00 | US-1778378-A // Telephone system // Butz Edward D. // Bell Telephone Labor Inc | ||||
| PDF File 1778377.pdf | 740 kB | Shaun Ewing | Oct 14, 1930 00:00 |
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US-1778377-A // Telegraph repeating device // Burton Everett T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 740 kB | Shaun Ewing | Oct 14, 1930 00:00 | US-1778377-A // Telegraph repeating device // Burton Everett T. // Bell Telephone Labor Inc | ||||
| PDF File 1778319.pdf | 1.32 MB | Shaun Ewing | Oct 14, 1930 00:00 |
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US-1778319-A // Telephone metering system // Hague Alfred E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.32 MB | Shaun Ewing | Oct 14, 1930 00:00 | US-1778319-A // Telephone metering system // Hague Alfred E. // Bell Telephone Labor Inc | ||||
| PDF File 1778309.pdf | 1.50 MB | Shaun Ewing | Oct 14, 1930 00:00 |
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US-1778309-A // Telephone metering system // Carpenter Warren W. ; Johnson Lewis H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.50 MB | Shaun Ewing | Oct 14, 1930 00:00 | US-1778309-A // Telephone metering system // Carpenter Warren W. ; Johnson Lewis H. // Bell Telephone Labor Inc | ||||
| PDF File 1778035.pdf | 727 kB | Shaun Ewing | Oct 14, 1930 00:00 |
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US-1778035-A // Harmonic-noise-suppression device // Mason Warren P. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 727 kB | Shaun Ewing | Oct 14, 1930 00:00 | US-1778035-A // Harmonic-noise-suppression device // Mason Warren P. // Bell Telephone Labor Inc | ||||
| PDF File 1777118.pdf | 530 kB | Shaun Ewing | Sept 30, 1930 00:00 |
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US-1777118-A // Acoustic device // Harrison Henry C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 530 kB | Shaun Ewing | Sept 30, 1930 00:00 | US-1777118-A // Acoustic device // Harrison Henry C. // Bell Telephone Labor Inc | ||||
| PDF File 1775241.pdf | 556 kB | Shaun Ewing | Sept 09, 1930 00:00 |
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US-1775241-A // Electrooptical system // Horton Joseph W. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 556 kB | Shaun Ewing | Sept 09, 1930 00:00 | US-1775241-A // Electrooptical system // Horton Joseph W. // Bell Telephone Labor Inc | ||||
| PDF File 1773938.pdf | 205 kB | Shaun Ewing | Aug 26, 1930 00:00 |
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US-1773938-A // Method of manufacturing loaded conductors // Bishop Walter M. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 205 kB | Shaun Ewing | Aug 26, 1930 00:00 | US-1773938-A // Method of manufacturing loaded conductors // Bishop Walter M. // Bell Telephone Labor Inc | ||||
| PDF File 1773910.pdf | 831 kB | Shaun Ewing | Aug 26, 1930 00:00 |
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US-1773910-A // Sound radiator // Lane Clarence E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 831 kB | Shaun Ewing | Aug 26, 1930 00:00 | US-1773910-A // Sound radiator // Lane Clarence E. // Bell Telephone Labor Inc | ||||
| PDF File 1772558.pdf | 744 kB | Shaun Ewing | Aug 12, 1930 00:00 |
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US-1772558-A // Loading system // Shea Timothy E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 744 kB | Shaun Ewing | Aug 12, 1930 00:00 | US-1772558-A // Loading system // Shea Timothy E. // Bell Telephone Labor Inc | ||||
| PDF File 1769920.pdf | 1.40 MB | Shaun Ewing | Jul 08, 1930 00:00 |
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US-1769920-A // Electrooptical transmission system // Gray Frank // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.40 MB | Shaun Ewing | Jul 08, 1930 00:00 | US-1769920-A // Electrooptical transmission system // Gray Frank // Bell Telephone Labor Inc | ||||
| PDF File 1769919.pdf | 1.33 MB | Shaun Ewing | Jul 08, 1930 00:00 |
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US-1769919-A // Electrooptical transmission system // Gray Frank ; Hefele John R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.33 MB | Shaun Ewing | Jul 08, 1930 00:00 | US-1769919-A // Electrooptical transmission system // Gray Frank ; Hefele John R. // Bell Telephone Labor Inc | ||||
| PDF File 1769918.pdf | 1.15 MB | Shaun Ewing | Jul 08, 1930 00:00 |
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US-1769918-A // Electrooptical transmission system // Gray Frank ; Hefele John R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 1.15 MB | Shaun Ewing | Jul 08, 1930 00:00 | US-1769918-A // Electrooptical transmission system // Gray Frank ; Hefele John R. // Bell Telephone Labor Inc | ||||
| PDF File 1768288.pdf | 930 kB | Shaun Ewing | Jun 24, 1930 00:00 |
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US-1768288-A // System for converting light energy into electrical energy and vice versa // Mohr Franklin // Bell Telephone Labor Inc | |||
| Version 1 (current) | 930 kB | Shaun Ewing | Jun 24, 1930 00:00 | US-1768288-A // System for converting light energy into electrical energy and vice versa // Mohr Franklin // Bell Telephone Labor Inc | ||||
| PDF File 1768286.pdf | 307 kB | Shaun Ewing | Jun 24, 1930 00:00 |
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US-1768286-A // Radioreceiver // Bishop Nathaniel // Bell Telephone Labor Inc | |||
| Version 1 (current) | 307 kB | Shaun Ewing | Jun 24, 1930 00:00 | US-1768286-A // Radioreceiver // Bishop Nathaniel // Bell Telephone Labor Inc | ||||
| PDF File 1768283.pdf | 527 kB | Shaun Ewing | Jun 24, 1930 00:00 |
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US-1768283-A // Control system // Bell John H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 527 kB | Shaun Ewing | Jun 24, 1930 00:00 | US-1768283-A // Control system // Bell John H. // Bell Telephone Labor Inc | ||||
| PDF File 1768273.pdf | 187 kB | Shaun Ewing | Jun 24, 1930 00:00 |
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US-1768273-A // Sound recording // Terry Roy V. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 187 kB | Shaun Ewing | Jun 24, 1930 00:00 | US-1768273-A // Sound recording // Terry Roy V. // Bell Telephone Labor Inc | ||||
| PDF File 1768262.pdf | 351 kB | Shaun Ewing | Jun 24, 1930 00:00 |
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US-1768262-A // Phase measuring system and method // Marrison Warren A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 351 kB | Shaun Ewing | Jun 24, 1930 00:00 | US-1768262-A // Phase measuring system and method // Marrison Warren A. // Bell Telephone Labor Inc |
