US3305647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal transmission analysis system
Assignee: Western Geophysical Company of America
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Filing: 1963-11-12
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Granted: 1967-02-21
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Expires: 1983-11-12
Abstract
No abstract record available.
Inventors
- 👤 Sheffet David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:09
CPC Classifications
H; H04; H04B; H04B3/00; H04B3/02; H04B3/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
MEANS FOR MEASURING THE SIGNAL TRANSMISSION TIME OF A SIGNAL TRANSMISSION MEDIUM OF KNOWN LENGTH COMPRISING: RADIO TRANSMITTER MEANS FOR GENERATING A SIGNAL, SAID RADIO TRANSMITTER BEING DISPOSED AT A PREDETERMINED DISTANCE FROM EACH END OF SAID TRANSMISSION MEDIUM AND HAVING COMPUTABLE TIMES OF TRANSMISSION THERETO, RADIO RECEIVER MEANS FOR RECEIVING SIGNALS RECEIVED AT ONE OF SAID ENDS THROUGH SAID TRANSMISSION MEDIUM TO BE COMPARED IN TIME WITH SAID SIGNALS AT THE OTHER END OF SAID MEDIUM WHEREBY THE TIME FOR SIGNAL TRANSMISSION THROUGH SAID TRANSMISSION MEDIUM EQUALS THE DIFFERENCE BETWEEN THE TIME SIGNALS WHICH ARE RECEIVED DIRECTLY AT ONE END OF SAID TRANSMISSION MEDIUM FROM SAID SIGNAL SOURCE AND THE TIME SIGNALS WHICH ARE RECEIVED AT SAID END AFTER BEING RECEIVED AT THE OTHER END AND TRANSMITTED THROUGH SAID TRANSMISSION MEDIUM PLUS THE TIME OF TRANSMISSION FROM SAID SOURCE TO SAID FIRST END, MINUS THE TIME OF TRANSMISSION OF SAID SIGNAL FROM SAID SOURCE TO SAID SECOND END.
Claim 2
Dependent Claim
159 words
MEANS FOR MEASURING THE SIGNAL TRANSMISSION TIME OF A SIGNAL TRANSMISSION MEDIUM OF KNOWN LENGTH COMPRISING: RADIO TRANSMITTER MEANS FOR GENERATING A SIGNAL, SAID RADIO TRANSMITTER BEING DISPOSED AT A PREDETERMINED DISTANCE FROM EACH END OF SAID TRANSMISSION MEDIUM AND HAVING COMPUTABLE TIMES OF TRANSMISSION THERETO, RADIO RECEIVER MEANS FOR RECEIVING SIGNALS RECEIVED AT ONE OF SAID ENDS THROUGH SAID TRANSMISSION MEDIUM TO BE COMPARED IN TIME WITH SAID SIGNALS AT THE OTHER END OF SAID MEDIUM WHEREBY THE TIME FOR SIGNAL TRANSMISSION THROUGH SAID TRANSMISSION MEDIUM EQUALS THE DIFFERENCE BETWEEN THE TIME SIGNALS WHICH ARE RECEIVED DIRECTLY AT ONE END OF SAID TRANSMISSION MEDIUM FROM SAID SIGNAL SOURCE AND THE TIME SIGNALS WHICH ARE RECEIVED AT SAID END AFTER BEING RECEIVED AT THE OTHER END AND TRANSMITTED THROUGH SAID TRANSMISSION MEDIUM PLUS THE TIME OF TRANSMISSION FROM SAID SOURCE TO SAID FIRST END, MINUS THE TIME OF TRANSMISSION OF SAID SIGNAL FROM SAID SOURCE TO SAID SECOND END.
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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |