US2842764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collision warning radar
Assignee: GTE Sylvania Inc
•
Filing: 1951-02-21
•
Granted: 1958-07-08
•
Expires: 1971-02-21
Abstract
No abstract record available.
Inventors
- 👤 Norman L Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:15
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/88; G01S13/93; G01S13/933
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2268587A
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US2570235A
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GB585988A
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US2426228A
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US2454673A
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US2533871A
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US2522367A
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US2532221A
Cited
US2508400A
Cited
US2557864A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |