US3283075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load circuits for intercommunication system
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
2026-10-27 16:12
CPC Classifications
H; H04; H04M; H04M9/00; H04M9/001
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A LOAD CIRCUIT FOR AN INTERCOMMUNICATION SYSTEM HAVING AN AUDIO AMPLIFIER AND A PLURALITY OF REMOTE STATIONS ADAPTED TO BE SELECTIVELY CONNECTED TO A SIGNAL OUTPUT LINE OF THE AMPLIFER BY MEANS OF A PLURALITY OF CONTROL SWITCHS, COMPRISING A LOAD RESISTOR AND SWITCHING MEANS FORMING A PART OF EACH OF SAID CONTROL SWITCHES, EACH OF SAID SWITCHING MEANS HAVING RECEPTION, INACTIVATION, AND TRANSMISSION POSITIONS WITH SAID SWITCHING MEANS CONNECTING THE ASSOCIATED LOAD RESISTOR INTO SAID CIRCUIT THROUGH SAID SIGNAL OUTPUT LINE IN LIEU OF THE ASSOCIATED REMOTE STATION WHENEVER THE ASSOCIATED CONTROL SWITCH IS IN THE INACTIVATION AND THE TRANSMISSION POSITIONS WHICH DISCONNECTS THE REMOTE STATION FROM THE SIGNAL OUTPUT LINE.
Claim 2
Dependent Claim
112 words
A LOAD CIRCUIT FOR AN INTERCOMMUNICATION SYSTEM HAVING AN AUDIO AMPLIFIER AND A PLURALITY OF REMOTE STATIONS ADAPTED TO BE SELECTIVELY CONNECTED TO A SIGNAL OUTPUT LINE OF THE AMPLIFER BY MEANS OF A PLURALITY OF CONTROL SWITCHS, COMPRISING A LOAD RESISTOR AND SWITCHING MEANS FORMING A PART OF EACH OF SAID CONTROL SWITCHES, EACH OF SAID SWITCHING MEANS HAVING RECEPTION, INACTIVATION, AND TRANSMISSION POSITIONS WITH SAID SWITCHING MEANS CONNECTING THE ASSOCIATED LOAD RESISTOR INTO SAID CIRCUIT THROUGH SAID SIGNAL OUTPUT LINE IN LIEU OF THE ASSOCIATED REMOTE STATION WHENEVER THE ASSOCIATED CONTROL SWITCH IS IN THE INACTIVATION AND THE TRANSMISSION POSITIONS WHICH DISCONNECTS THE REMOTE STATION FROM THE SIGNAL OUTPUT LINE.
References Cited (Backward Citations)
US2149637A
Cited
US2377672A
Cited
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 |