US2499349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Obstacle avoidance system
Assignee: Unisys Corp
•
Filing: 1943-03-31
•
Granted: 1950-03-07
•
Expires: 1963-03-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:14
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02; G01S13/00; G01S13/88; G01S13/93; G01S13/933; G01S13/935
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1923430A
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US1997412A
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US2083242A
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US2158584A
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US2057773A
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US2176469A
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US2231929A
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US2216575A
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US2225046A
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US2247662A
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US2305485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-06 | 1953-09-05 | 1954-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-06 | 1957-09-05 | 1958-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-06 | 1961-09-05 | 1962-03-07 | $7700.00 | Window Closed / Lapsed |