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US3277243A
Expired / Lapsed
US
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Telephone adapter
Assignee: Unisys Corp
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Filing: 1962-12-19
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Granted: 1966-10-04
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Expires: 1982-12-19
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Fairbairn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:03
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/21; H04M1/215
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
IN COMBINATION, A TELEPHONE TRANSMITTER INCLUDING A MICROPHONE AND A TELEPHONE LINE; A FACSIMILE TRANSMITTER; AN IMPEDANCE OF THE SAME VALUE AS SAID MICROPHONE; AN AMPLIFIER; AND AN ELECTRICAL SWITCH ACTUATABLE FROM ONE POSITION CONNECTING SAID IMPEDANCE, SAID AMPLIFIER AND SAID FACSIMILE TRANSMITTER TO SAID TELEPHONE LINE, TO ANOTHER POSITION CONNECTING SAID MICROPHONE, SAID AMPLIFIER AND SAID FACSIMILE TRANSMITTER TO SAID TELEPHONE LINE.
Claim 2
Dependent Claim
63 words
IN COMBINATION, A TELEPHONE TRANSMITTER INCLUDING A MICROPHONE AND A TELEPHONE LINE; A FACSIMILE TRANSMITTER; AN IMPEDANCE OF THE SAME VALUE AS SAID MICROPHONE; AN AMPLIFIER; AND AN ELECTRICAL SWITCH ACTUATABLE FROM ONE POSITION CONNECTING SAID IMPEDANCE, SAID AMPLIFIER AND SAID FACSIMILE TRANSMITTER TO SAID TELEPHONE LINE, TO ANOTHER POSITION CONNECTING SAID MICROPHONE, SAID AMPLIFIER AND SAID FACSIMILE TRANSMITTER TO SAID TELEPHONE LINE.
References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |