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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1733596.pdf | 287 kB | Shaun Ewing | Oct 29, 1929 00:00 |
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US-1733596-A // Acoustic device // Harrison Henry C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 287 kB | Shaun Ewing | Oct 29, 1929 00:00 | US-1733596-A // Acoustic device // Harrison Henry C. // Bell Telephone Labor Inc | ||||
| PDF File 1778894.pdf | 287 kB | Shaun Ewing | Oct 21, 1930 00:00 |
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US-1778894-A // Relay // Fry Jacob R. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 287 kB | Shaun Ewing | Oct 21, 1930 00:00 | US-1778894-A // Relay // Fry Jacob R. // Bell Telephone Labor Inc | ||||
| PDF File 1724989.pdf | 286 kB | Shaun Ewing | Aug 20, 1929 00:00 |
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US-1724989-A // Contactor drum for telephone-central-office equipment // Barber Charles C. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 286 kB | Shaun Ewing | Aug 20, 1929 00:00 | US-1724989-A // Contactor drum for telephone-central-office equipment // Barber Charles C. // Bell Telephone Labor Inc | ||||
| PDF File 1647738.pdf | 284 kB | Shaun Ewing | Nov 01, 1927 00:00 |
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US-1647738-A // Insulation of magnetic material // Legg Victor E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 284 kB | Shaun Ewing | Nov 01, 1927 00:00 | US-1647738-A // Insulation of magnetic material // Legg Victor E. // Bell Telephone Labor Inc | ||||
| PDF File 1739068.pdf | 284 kB | Shaun Ewing | Dec 10, 1929 00:00 |
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US-1739068-A // Method of producing materials in finely-divided form // Harris James E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 284 kB | Shaun Ewing | Dec 10, 1929 00:00 | US-1739068-A // Method of producing materials in finely-divided form // Harris James E. // Bell Telephone Labor Inc | ||||
| PDF File 1746803.pdf | 282 kB | Shaun Ewing | Feb 11, 1930 00:00 |
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US-1746803-A // Balanced radio receiving system // Stevenson George H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 282 kB | Shaun Ewing | Feb 11, 1930 00:00 | US-1746803-A // Balanced radio receiving system // Stevenson George H. // Bell Telephone Labor Inc | ||||
| 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 1717055.pdf | 281 kB | Shaun Ewing | Jun 11, 1929 00:00 |
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US-1717055-A // Public-address system // Melhuish Lawrence E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 281 kB | Shaun Ewing | Jun 11, 1929 00:00 | US-1717055-A // Public-address system // Melhuish Lawrence E. // Bell Telephone Labor Inc | ||||
| PDF File 1762745.pdf | 279 kB | Shaun Ewing | Jun 10, 1930 00:00 |
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US-1762745-A // Substation apparatus // Shann Oscar A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 279 kB | Shaun Ewing | Jun 10, 1930 00:00 | US-1762745-A // Substation apparatus // Shann Oscar A. // Bell Telephone Labor Inc | ||||
| PDF File 1733592.pdf | 277 kB | Shaun Ewing | Oct 29, 1929 00:00 |
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US-1733592-A // Process of manufacture of magnetic cores // Given Frederick J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 277 kB | Shaun Ewing | Oct 29, 1929 00:00 | US-1733592-A // Process of manufacture of magnetic cores // Given Frederick J. // Bell Telephone Labor Inc | ||||
| PDF File 1673005.pdf | 277 kB | Shaun Ewing | Jun 12, 1928 00:00 |
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US-1673005-A // Condenser // Gargan John O. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 277 kB | Shaun Ewing | Jun 12, 1928 00:00 | US-1673005-A // Condenser // Gargan John O. // Bell Telephone Labor Inc | ||||
| PDF File 1757736.pdf | 276 kB | Shaun Ewing | May 06, 1930 00:00 |
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US-1757736-A // Lubricating device // Pritchard William T. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 276 kB | Shaun Ewing | May 06, 1930 00:00 | US-1757736-A // Lubricating device // Pritchard William T. // Bell Telephone Labor Inc | ||||
| PDF File 1756705.pdf | 274 kB | Shaun Ewing | Apr 29, 1930 00:00 |
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US-1756705-A // Voice screen // Jr. Walter F. Smith, ; Crabtree Theodore H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 274 kB | Shaun Ewing | Apr 29, 1930 00:00 | US-1756705-A // Voice screen // Jr. Walter F. Smith, ; Crabtree Theodore H. // Bell Telephone Labor Inc | ||||
| PDF File 1651958.pdf | 273 kB | Shaun Ewing | Dec 06, 1927 00:00 |
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US-1651958-A // Insulation of finely-divided magnetic material // Lowry Homer H. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 273 kB | Shaun Ewing | Dec 06, 1927 00:00 | US-1651958-A // Insulation of finely-divided magnetic material // Lowry Homer H. // Bell Telephone Labor Inc | ||||
| PDF File 1784860.pdf | 271 kB | Shaun Ewing | Dec 16, 1930 00:00 |
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US-1784860-A // Sound recorder // Wiebusch Charles F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 271 kB | Shaun Ewing | Dec 16, 1930 00:00 | US-1784860-A // Sound recorder // Wiebusch Charles F. // Bell Telephone Labor Inc | ||||
| PDF File 1747841.pdf | 271 kB | Shaun Ewing | Feb 18, 1930 00:00 |
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US-1747841-A // Substation apparatus // Peterson Arthur E. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 271 kB | Shaun Ewing | Feb 18, 1930 00:00 | US-1747841-A // Substation apparatus // Peterson Arthur E. // Bell Telephone Labor Inc | ||||
| PDF File 1667804.pdf | 270 kB | Shaun Ewing | May 01, 1928 00:00 |
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US-1667804-A // Means for reenforcing the lock and door of telephone coin collectors // Hoyt Frederick A. ; Shann Oscar A. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 270 kB | Shaun Ewing | May 01, 1928 00:00 | US-1667804-A // Means for reenforcing the lock and door of telephone coin collectors // Hoyt Frederick A. ; Shann Oscar A. // Bell Telephone Labor Inc | ||||
| PDF File 1719499.pdf | 267 kB | Shaun Ewing | Jul 02, 1929 00:00 |
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US-1719499-A // Telephone system // Bowne Langford J. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 267 kB | Shaun Ewing | Jul 02, 1929 00:00 | US-1719499-A // Telephone system // Bowne Langford J. // Bell Telephone Labor Inc | ||||
| PDF File 1632104.pdf | 267 kB | Shaun Ewing | Jun 14, 1927 00:00 |
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US-1632104-A // Transmission circuits // Whiting Donald F. // Bell Telephone Labor Inc | |||
| Version 1 (current) | 267 kB | Shaun Ewing | Jun 14, 1927 00:00 | US-1632104-A // Transmission circuits // Whiting Donald F. // Bell Telephone Labor Inc | ||||
| PDF File 1632130.pdf | 266 kB | Shaun Ewing | Jun 14, 1927 00:00 |
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US-1632130-A // Condenser // Haddock Arthur // Bell Telephone Labor Inc | |||
| Version 1 (current) | 266 kB | Shaun Ewing | Jun 14, 1927 00:00 | US-1632130-A // Condenser // Haddock Arthur // Bell Telephone Labor Inc |
