US3243512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intercommunication system
Assignee: Talk a Phone Co
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Filing: 1965-03-01
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Granted: 1966-03-29
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Expires: 1985-03-01
Abstract
No abstract record available.
Inventors
- 👤 Liberman Arie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:19
CPC Classifications
H; H04; H04M; H04M9/00; H04M9/001
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN AN INTERCOMMUNICATION SYSTEM: A PLURALITY OF STATIONS EACH HAVING AN ELECTRO-ACOUSTICAL TRANSDUCER; A SOURCE OF POWER IN SAID SYSTEM; CONDUCTOR MEANS INTERCONNECTING SAID STATIONS AND INCLUDING A PAIR OF LEADS BETWEEN EACH STATION FOR CONNECTING SAID TRANSDUCERS; STATION SELECTOR AND CONDITION SELECTOR SWITCH MEANS IN ONE OF SAID STATIONS, ACTUABLE TO INITIATE A CELL TO ANOTHER STATION; MEANS IN SAID OTHER STATION FOR INDICATING RECEPTION OF A CALL; SWITCH MEANS IN SAID OTHER STATION, ACTUATED ON USE OF SAID OTHER STATION; CIRCUIT MEANS INCLUDING SAID SWITCH MEANS IN SAID OTHER STATION AND SAID PAIR OF LEADS INTERCONNECTING SAID INDICATING MEANS WITH SAID POWER
Claim 2
Dependent Claim
104 words
IN AN INTERCOMMUNICATION SYSTEM: A PLURALITY OF STATIONS EACH HAVING AN ELECTRO-ACOUSTICAL TRANSDUCER; A SOURCE OF POWER IN SAID SYSTEM; CONDUCTOR MEANS INTERCONNECTING SAID STATIONS AND INCLUDING A PAIR OF LEADS BETWEEN EACH STATION FOR CONNECTING SAID TRANSDUCERS; STATION SELECTOR AND CONDITION SELECTOR SWITCH MEANS IN ONE OF SAID STATIONS, ACTUABLE TO INITIATE A CELL TO ANOTHER STATION; MEANS IN SAID OTHER STATION FOR INDICATING RECEPTION OF A CALL; SWITCH MEANS IN SAID OTHER STATION, ACTUATED ON USE OF SAID OTHER STATION; CIRCUIT MEANS INCLUDING SAID SWITCH MEANS IN SAID OTHER STATION AND SAID PAIR OF LEADS INTERCONNECTING SAID INDICATING MEANS WITH SAID POWER
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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |