US3144645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distance measuring system
Assignee: Bendix Corp
•
Filing: 1960-04-21
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Granted: 1964-08-11
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Expires: 1980-04-21
Abstract
No abstract record available.
Inventors
- 👤 Norman E Mciver
- 👤 Gordon A Leap
- 👤 Robert W Cope
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:04
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/74; G01S13/82; G01S13/84
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
AN INTERROGATOR FOR A DISTANCE MEASURING SYSTEM COMPRISING AN AUDIO MODULATION TONE OSCILLATOR, A HIGH-Q ELECTROMECHANICAL RESONATOR FOR STABILIZING SAID TONE OSCILLATOR, A TRANSMITTER MODULATED BY SAID TONE, A RECEIVER, A PHASE COMPARATOR, MEANS FOR APPLYING TO SAID PHASE COMPARATOR SAID TONE AND THE MODULATION RECOVERED BY SAID RECEIVER, MEANS FOR INDICATING DISTANCE IN RESPONSE TO THE PHASE DIFFERENCE DETERMINED BY SAID PHASE COMPARATOR AND MEANS FOR SELECTIVELY OPERATING SAID TRANSMITTER AND RECEIVER UPON THE SAME CARRIER FREQUENCY FOR INTERROGATING AND OBTAINING A RESPONSE FROM A REMOTE RESPONDER STATION.
Claim 2
Dependent Claim
89 words
AN INTERROGATOR FOR A DISTANCE MEASURING SYSTEM COMPRISING AN AUDIO MODULATION TONE OSCILLATOR, A HIGH-Q ELECTROMECHANICAL RESONATOR FOR STABILIZING SAID TONE OSCILLATOR, A TRANSMITTER MODULATED BY SAID TONE, A RECEIVER, A PHASE COMPARATOR, MEANS FOR APPLYING TO SAID PHASE COMPARATOR SAID TONE AND THE MODULATION RECOVERED BY SAID RECEIVER, MEANS FOR INDICATING DISTANCE IN RESPONSE TO THE PHASE DIFFERENCE DETERMINED BY SAID PHASE COMPARATOR AND MEANS FOR SELECTIVELY OPERATING SAID TRANSMITTER AND RECEIVER UPON THE SAME CARRIER FREQUENCY FOR INTERROGATING AND OBTAINING A RESPONSE FROM A REMOTE RESPONDER STATION.
References Cited (Backward Citations)
US1562485A
Cited
US2134716A
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US2198113A
Cited
US2582971A
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US2248727A
Cited
US2470787A
Cited
US2489273A
Cited
US2520520A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |