US3145380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signalling system
Assignee: General Precision Inc
•
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 07:51
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
References Cited (Backward Citations)
US1476003A
Cited
US1786805A
Cited
US2325829A
Cited
US2542825A
Cited
US2483445A
Cited
US2553910A
Cited
US2630562A
Cited
US2673292A
Cited
US2717370A
Cited
US2719284A
Cited
US2753550A
Cited
US2910579A
Cited
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 |