US3179939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for determining collision courses
Assignee: Individual
•
Filing: 1963-04-09
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Granted: 1965-04-20
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Expires: 1983-04-09
Abstract
No abstract record available.
Inventors
- 👤 Nello R Castellini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:03
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/88; G01S13/93; G01S13/933
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
77 words
A COLLISION APPARATUS FOR INDICATING THE PRESENCE OF A COLLISION COURSE BETWEEN TWO VEHICLES MOVING RELATIVE TO ONE ANOTHER COMPRISING RECEIVER ANTENNA MEANS ON ONE OF SAID VEHICLES FOR RECEIVING SUCCESSIVE SIGNALS INDICATIVE TO SUCCESSIVE PORTIONS OF THE OTHER OF SAID VEHICLES RELATIVE TO SAID ONE VEHICLE, RECEIVER MEANS ON ONE OF SAID VEHICLES COACTING WITH SAID ANTENNA MEANS AND RESPONSIVE TO SAID RECEIVED SIGNALS FOR DETECTING APPARENT ANGULAR ROTATION OF A LINE-OF-SIGHT BETWEEN SAID VEHICLES, SAID
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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |