US2637846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording plan position indicator
Assignee: United States Department of the Navy
•
Filing: 1945-09-14
•
Granted: 1953-05-05
•
Expires: 1965-09-14
Abstract
No abstract record available.
Inventors
- 👤 Jr George E Valley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:48
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2406406A
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US2412670A
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US2410424A
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US2418490A
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US2422135A
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US2403562A
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US2415981A
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US2422295A
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US2430307A
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US2492120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |