US3283076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Volume control circuits for intercommunication systems
Assignee: General Electric Co
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Filing: 1963-03-26
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Granted: 1966-11-01
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Expires: 1983-03-26
Abstract
No abstract record available.
Inventors
- 👤 Harwood B Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:30
CPC Classifications
H; H04; H04M; H04M9/00; H04M9/001
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
89 words
AN INTERCOMMUNICATION STATION COMPRISING A LISTEN SIGNAL INPUT CIRCUIT AND A TALK SIGNAL OUTPUT CIRCUIT, A LOUDSPEAKER, A POTENTIOMETER HAVING AN ADJUSTABLE TAP, AND SWITCHING MEANS HAVING A LISTEN POSITION FOR ELECTRICALLY CONNECTING SAID POTENTIOMETER ACROSS SAID LISTEN SIGNAL INPUT CIRCUIT AND FOR ELECTRICALLY CONNECTING SAID LOUDSPEAKER BETWEEN SAID ADJUSTABLE TAP AND AN END OF SAID POTENTIOMETER, SAID SWITCHING MEANS FURTHER HAVING A TALK POSITION FOR ELECTRICALLY CONNECTING SAID LOUDSPEAKER ACROSS SAID TALK SIGNAL OUTPUT CIRCUIT AND FOR ELECTRICALLY DISCONNECTING SAID POTENTIOMETER FROM ACROSS SAID LISTEN SIGNAL PUT CIRCUIT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |