Patent US4903819A successfully refreshed from Google Patents.
US3132300A
Expired / Lapsed
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Portable transistorized transceiver apparatus
Assignee: Charbonnages de France CDF
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Filing: 1961-08-07
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Granted: 1964-05-05
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Expires: 1981-08-07
Abstract
No abstract record available.
Inventors
- 👤 Albert E Lefevre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:59
CPC Classifications
H; H03; H03C; H03C1/00; H03C1/36; H04; H04B; H04B1/00; H04B1/38; H04B1/40; H04B1/44; H04B1/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
CIRCUITRY FOR A TRANSISTORIZED TRANSMISSION-RECEIVING APPARATUS COMPRISING TRANSMITTING MEANS, RECEIVING MEANS, AND A POWER SUPPLY IN A CIRCUIT RELATIONSHIP; SWITCHING MEANS HAVING AT LEAST TWO POSITIONS CONNECTING SAID TRANSMITTING MEANS TO SAID POWER SUPPLY IN ONE POSITION AND SAID RECEIVING MEANS TO SAID POWER SUPPLY IN ANOTHER POSITION; SAID TRANSMITTING MEANS INCLUDING AN
Claim 2
Dependent Claim
53 words
CIRCUITRY FOR A TRANSISTORIZED TRANSMISSION-RECEIVING APPARATUS COMPRISING TRANSMITTING MEANS, RECEIVING MEANS, AND A POWER SUPPLY IN A CIRCUIT RELATIONSHIP; SWITCHING MEANS HAVING AT LEAST TWO POSITIONS CONNECTING SAID TRANSMITTING MEANS TO SAID POWER SUPPLY IN ONE POSITION AND SAID RECEIVING MEANS TO SAID POWER SUPPLY IN ANOTHER POSITION; SAID TRANSMITTING MEANS INCLUDING AN
References Cited (Backward Citations)
US2935606A
Cited
FR1228174A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |