US3167772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collision avoidance system
Assignee: National Co Inc
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Filing: 1962-07-23
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Granted: 1965-01-26
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Expires: 1982-07-23
Abstract
No abstract record available.
Inventors
- 👤 Jr James J Bagnall
- 👤 Lawrence F Fenton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:11
CPC Classifications
G; G01; G01S; G01S11/00; G01S11/02; G01S11/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A SYSTEM FOR INDICATING THE THREAT OF COLLISION BETWEEN AT LEAST TWO RELATIVELY MOBILE STATIONS COMPRISING MEANS FOR KEEPING TIME AT SAID STATIONS, MEANS FOR TRANSMITTING RADIO FREQUENCY SIGNALS FROM A FIRST OF SAID STATIONS AT A PREDETERMINED TIME, MEANS AT A SECOND OF SAID STATIONS FOR RECEIVING SAID SIGNALS, MEANS AT SAID SECOND STATION FOR DETERMINING THE TRAVEL TIME OF THE RECEIVED SIGNAL, MEANS TO DERIVE AN INDICATION OF THE RANGE BETWEEN SAID STATIONS FROM SAID TRAVEL TIME, AND MEANS AT SAID SECOND STATION TO DERIVE AN INDICATION OF THE RATE OF
Claim 2
Independent Claim
93 words
A SYSTEM FOR INDICATING THE THREAT OF COLLISION BETWEEN AT LEAST TWO RELATIVELY MOBILE STATIONS COMPRISING MEANS FOR KEEPING TIME AT SAID STATIONS, MEANS FOR TRANSMITTING RADIO FREQUENCY SIGNALS FROM A FIRST OF SAID STATIONS AT A PREDETERMINED TIME, MEANS AT A SECOND OF SAID STATIONS FOR RECEIVING SAID SIGNALS, MEANS AT SAID SECOND STATION FOR DETERMINING THE TRAVEL TIME OF THE RECEIVED SIGNAL, MEANS TO DERIVE AN INDICATION OF THE RANGE BETWEEN SAID STATIONS FROM SAID TRAVEL TIME, AND MEANS AT SAID SECOND STATION TO DERIVE AN INDICATION OF THE RATE OF
References Cited (Backward Citations)
US3068473A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-01-26 | 1968-07-27 | 1969-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-26 | 1972-07-27 | 1973-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-26 | 1976-07-27 | 1977-01-26 | $7700.00 | Window Closed / Lapsed |