US2646530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plan position indicator system
Assignee: United States Department of the Navy
•
Filing: 1945-09-14
•
Granted: 1953-07-21
•
Expires: 1965-09-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Warren F Goodell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:13
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/10; G01S7/12; G01S7/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2151917A
Cited
US2172395A
Cited
US2411030A
Cited
US2412291A
Cited
US2421747A
Cited
US2422975A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-20 | 1957-01-19 | 1957-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-20 | 1961-01-19 | 1961-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-20 | 1965-01-19 | 1965-07-21 | $7700.00 | Window Closed / Lapsed |