Patent US3142836A successfully refreshed from Google Patents.
US3142836A
Expired / Lapsed
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Transponder control circuit
Assignee: AERO GEO ASTRO CORP
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Filing: 1962-06-08
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Granted: 1964-07-28
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Expires: 1982-06-08
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Ambrose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:14
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/66; H05B6/666; G; G01; G01S; G01S13/00; G01S13/74; G01S13/76
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
82 words
IN A TRANSPONDER RECEIVING CONTROL SIGNALS, THE COMBINATION WHICH COMPRISES: (A) A MAGNETRON; (B) POWER SUPPLY CIRCUIT MEANS CONNECTED TO SAID MAGNETRON TO HEAT THE FILAMENT THEREOF, AND INCLUDING A SWITCH FOR CONNECTING AND DISCONNECTING THE CIRCUIT MEANS FROM THE FILAMENT; AND (C) SWITCH CONTROL MEANS FOR CONNECTING SAID CIRCUIT MEANS WITH THE FILAMENT UPON DETECTION OF CONTROL SIGNALS AND FOR DISCONNECTING SAID CIRCUIT MEANS FROM THE FILAMENT AFTER A PREDETERMINED TIME PERIOD DURING WHICH NO CONTROL SIGNALS HAVE BEEN DETECTED; SAID
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) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |