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Attachments
| Name | Size | Creator | Creation Date | Labels | Comment | |||
|---|---|---|---|---|---|---|---|---|
| PDF File 1692317.pdf | 943 kB | Shaun Ewing | Nov 20, 1928 00:00 |
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US-1692317-A // Acoustic wave filter // Stewart George Walter // American Telephone & Telegraph | |||
| Version 1 (current) | 943 kB | Shaun Ewing | Nov 20, 1928 00:00 | US-1692317-A // Acoustic wave filter // Stewart George Walter // American Telephone & Telegraph | ||||
| PDF File 1691990.pdf | 419 kB | Shaun Ewing | Nov 20, 1928 00:00 |
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US-1691990-A // High-frequency signaling system // Potter Ralph K. // American Telephone & Telegraph | |||
| Version 1 (current) | 419 kB | Shaun Ewing | Nov 20, 1928 00:00 | US-1691990-A // High-frequency signaling system // Potter Ralph K. // American Telephone & Telegraph | ||||
| PDF File 1691986.pdf | 554 kB | Shaun Ewing | Nov 20, 1928 00:00 |
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US-1691986-A // Apparatus and method for generating pure sine waves of electromotive force // Nyquist Harry // American Telephone & Telegraph | |||
| Version 1 (current) | 554 kB | Shaun Ewing | Nov 20, 1928 00:00 | US-1691986-A // Apparatus and method for generating pure sine waves of electromotive force // Nyquist Harry // American Telephone & Telegraph | ||||
| PDF File 1691962.pdf | 325 kB | Shaun Ewing | Nov 20, 1928 00:00 |
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US-1691962-A // Selective signaling system // Demarest Charles S. // American Telephone & Telegraph | |||
| Version 1 (current) | 325 kB | Shaun Ewing | Nov 20, 1928 00:00 | US-1691962-A // Selective signaling system // Demarest Charles S. // American Telephone & Telegraph | ||||
| PDF File 1691150.pdf | 227 kB | Shaun Ewing | Nov 13, 1928 00:00 |
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US-1691150-A // Electrical power-limiting device // Crisson George // American Telephone & Telegraph | |||
| Version 1 (current) | 227 kB | Shaun Ewing | Nov 13, 1928 00:00 | US-1691150-A // Electrical power-limiting device // Crisson George // American Telephone & Telegraph | ||||
| PDF File 1691091.pdf | 352 kB | Shaun Ewing | Nov 13, 1928 00:00 |
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US-1691091-A // Alternating-current relay // Thompson Elmer O. // American Telephone & Telegraph | |||
| Version 1 (current) | 352 kB | Shaun Ewing | Nov 13, 1928 00:00 | US-1691091-A // Alternating-current relay // Thompson Elmer O. // American Telephone & Telegraph | ||||
| PDF File 1690182.pdf | 716 kB | Shaun Ewing | Nov 06, 1928 00:00 |
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US-1690182-A // Suppression of echoes and singing in four-wire circuits // Silent Harold C. // American Telephone & Telegraph | |||
| Version 1 (current) | 716 kB | Shaun Ewing | Nov 06, 1928 00:00 | US-1690182-A // Suppression of echoes and singing in four-wire circuits // Silent Harold C. // American Telephone & Telegraph | ||||
| PDF File 1690167.pdf | 316 kB | Shaun Ewing | Nov 06, 1928 00:00 |
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US-1690167-A // Vacuum tube and associated element // Holden William H. T. // American Telephone & Telegraph | |||
| Version 1 (current) | 316 kB | Shaun Ewing | Nov 06, 1928 00:00 | US-1690167-A // Vacuum tube and associated element // Holden William H. T. // American Telephone & Telegraph | ||||
| PDF File 1690153.pdf | 314 kB | Shaun Ewing | Nov 06, 1928 00:00 |
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US-1690153-A // Selective echo suppressor // Abraham Leonard G. // American Telephone & Telegraph | |||
| Version 1 (current) | 314 kB | Shaun Ewing | Nov 06, 1928 00:00 | US-1690153-A // Selective echo suppressor // Abraham Leonard G. // American Telephone & Telegraph | ||||
| PDF File 1689267.pdf | 326 kB | Shaun Ewing | Oct 30, 1928 00:00 |
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US-1689267-A // Method and apparatus for picture transmission // Weaver Allan // American Telephone & Telegraph | |||
| Version 1 (current) | 326 kB | Shaun Ewing | Oct 30, 1928 00:00 | US-1689267-A // Method and apparatus for picture transmission // Weaver Allan // American Telephone & Telegraph | ||||
| PDF File 1689263.pdf | 1.25 MB | Shaun Ewing | Oct 30, 1928 00:00 |
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US-1689263-A // Printing telegraphy // Vernam Gilbert S. // American Telephone & Telegraph | |||
| Version 1 (current) | 1.25 MB | Shaun Ewing | Oct 30, 1928 00:00 | US-1689263-A // Printing telegraphy // Vernam Gilbert S. // American Telephone & Telegraph | ||||
| PDF File 1689230.pdf | 248 kB | Shaun Ewing | Oct 30, 1928 00:00 |
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US-1689230-A // Locking device for switch keys // Christopher Harry J. // American Telephone & Telegraph | |||
| Version 1 (current) | 248 kB | Shaun Ewing | Oct 30, 1928 00:00 | US-1689230-A // Locking device for switch keys // Christopher Harry J. // American Telephone & Telegraph | ||||
| PDF File 1688455.pdf | 717 kB | Shaun Ewing | Oct 23, 1928 00:00 |
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US-1688455-A // Telephone signaling system // Demarest Charles S. ; Loynes Owen H. // American Telephone & Telegraph | |||
| Version 1 (current) | 717 kB | Shaun Ewing | Oct 23, 1928 00:00 | US-1688455-A // Telephone signaling system // Demarest Charles S. ; Loynes Owen H. // American Telephone & Telegraph | ||||
| PDF File 1688454.pdf | 521 kB | Shaun Ewing | Oct 23, 1928 00:00 |
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US-1688454-A // Telephone signaling system // Demarest Charles S. ; Loynes Owen H. // American Telephone & Telegraph | |||
| Version 1 (current) | 521 kB | Shaun Ewing | Oct 23, 1928 00:00 | US-1688454-A // Telephone signaling system // Demarest Charles S. ; Loynes Owen H. // American Telephone & Telegraph | ||||
| PDF File 1688453.pdf | 610 kB | Shaun Ewing | Oct 23, 1928 00:00 |
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US-1688453-A // Telephone signaling system // Demarest Charles S. ; Loynes Owen H. // American Telephone & Telegraph | |||
| Version 1 (current) | 610 kB | Shaun Ewing | Oct 23, 1928 00:00 | US-1688453-A // Telephone signaling system // Demarest Charles S. ; Loynes Owen H. // American Telephone & Telegraph | ||||
| PDF File 1688452.pdf | 429 kB | Shaun Ewing | Oct 23, 1928 00:00 |
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US-1688452-A // Telephone signaling system // Demarest Charles S. ; Loynes Owen H. // American Telephone & Telegraph | |||
| Version 1 (current) | 429 kB | Shaun Ewing | Oct 23, 1928 00:00 | US-1688452-A // Telephone signaling system // Demarest Charles S. ; Loynes Owen H. // American Telephone & Telegraph | ||||
| PDF File 1688451.pdf | 630 kB | Shaun Ewing | Oct 23, 1928 00:00 |
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US-1688451-A // Telephone signaling system // Demarest Charles S. ; Loynes Owen H. // American Telephone & Telegraph | |||
| Version 1 (current) | 630 kB | Shaun Ewing | Oct 23, 1928 00:00 | US-1688451-A // Telephone signaling system // Demarest Charles S. ; Loynes Owen H. // American Telephone & Telegraph | ||||
| PDF File 1688292.pdf | 417 kB | Shaun Ewing | Oct 16, 1928 00:00 |
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US-1688292-A // System of modulating carrier currents // Weaver Allan // American Telephone & Telegraph | |||
| Version 1 (current) | 417 kB | Shaun Ewing | Oct 16, 1928 00:00 | US-1688292-A // System of modulating carrier currents // Weaver Allan // American Telephone & Telegraph | ||||
| PDF File 1687535.pdf | 701 kB | Shaun Ewing | Oct 16, 1928 00:00 |
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US-1687535-A // Reduction of losses in insulators, pins, and cross arms // Affel Herman A. ; Green Estill I. // American Telephone & Telegraph | |||
| Version 1 (current) | 701 kB | Shaun Ewing | Oct 16, 1928 00:00 | US-1687535-A // Reduction of losses in insulators, pins, and cross arms // Affel Herman A. ; Green Estill I. // American Telephone & Telegraph | ||||
| PDF File 1687495.pdf | 447 kB | Shaun Ewing | Oct 16, 1928 00:00 |
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US-1687495-A // Insulator // Gordon Chester S. ; Lowe James T. // American Telephone & Telegraph | |||
| Version 1 (current) | 447 kB | Shaun Ewing | Oct 16, 1928 00:00 | US-1687495-A // Insulator // Gordon Chester S. ; Lowe James T. // American Telephone & Telegraph |
