US2501110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Indicating circuit
Assignee: United States, WAR, Secretary of
•
Filing: 1945-01-24
•
Granted: 1950-03-21
•
Expires: 1965-01-24
Abstract
No abstract record available.
Inventors
- 👤 Robert M Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:54
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/10; G01S7/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2137262A
Cited
US2182326A
Cited
US2222943A
Cited
US2283951A
Cited
US2419118A
Cited
US2343988A
Cited
US2406858A
Cited
US2416199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-20 | 1953-09-19 | 1954-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-20 | 1957-09-19 | 1958-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-20 | 1961-09-19 | 1962-03-21 | $7700.00 | Window Closed / Lapsed |