Patent US3145380A successfully refreshed from Google Patents.
US3145380A
Expired / Lapsed
US
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Signalling system
Assignee: General Precision Inc
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Filing: 1958-10-24
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Granted: 1964-08-18
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Expires: 1978-10-24
Abstract
No abstract record available.
Inventors
- 👤 Currie Gerard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:31
CPC Classifications
B; B61; B61L; B61L25/00; B61L25/02; B61L25/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
AN INTERROGATOR RESPONDER SIGNALLING SYSTEM COMPRISING A PLURALITY OF INTERROGATORS AND A PLURALITY OF PASSIVE RESPONDERS, SAID INTERROGATORS AND RESPONDERS BEING CAPABLE OF RELATIVE MOTION WITH RESPECT TO EACH OTHER, EACH INTERROGATOR INCLUDING A MEANS FOR GENERATING A CYCLICALLY REPEATING SEQUENCE OF SUCCESSIVE INTERROGATOR SIGNALS OF DIFFERENT FREQUENCIES, EACH RESPONDER INCLUDING MEANS RESPONSIVE TO SELECTED ONES OF SAID SEQUENCE OF PULSE INTERROGATOR SIGNALS WHEN SAID RESPONDER AND AN INTERROGATOR MOVE INTO SPACED RELATION WITH EACH OTHER, SAID RESPONDER INCLUDING MEANS FOR GENERATING SIMULTANEOUS PULSE CODED SIGNALS IN RESPONSE TO THE SELECTED ONES OF SAID SEQUENCE OF PULSED INTERROGATOR SIGNALS, SAID
Claim 2
Dependent Claim
100 words
AN INTERROGATOR RESPONDER SIGNALLING SYSTEM COMPRISING A PLURALITY OF INTERROGATORS AND A PLURALITY OF PASSIVE RESPONDERS, SAID INTERROGATORS AND RESPONDERS BEING CAPABLE OF RELATIVE MOTION WITH RESPECT TO EACH OTHER, EACH INTERROGATOR INCLUDING A MEANS FOR GENERATING A CYCLICALLY REPEATING SEQUENCE OF SUCCESSIVE INTERROGATOR SIGNALS OF DIFFERENT FREQUENCIES, EACH RESPONDER INCLUDING MEANS RESPONSIVE TO SELECTED ONES OF SAID SEQUENCE OF PULSE INTERROGATOR SIGNALS WHEN SAID RESPONDER AND AN INTERROGATOR MOVE INTO SPACED RELATION WITH EACH OTHER, SAID RESPONDER INCLUDING MEANS FOR GENERATING SIMULTANEOUS PULSE CODED SIGNALS IN RESPONSE TO THE SELECTED ONES OF SAID SEQUENCE OF PULSED INTERROGATOR SIGNALS, SAID
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |