US2640954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condenser servo mechanism
Assignee: United States Department of the Navy
•
Filing: 1946-01-15
•
Granted: 1953-06-02
•
Expires: 1966-01-15
Abstract
No abstract record available.
Inventors
- 👤 Chalmers W Sherwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:04
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/1418
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2126910A
Cited
US2154375A
Cited
US2407536A
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US2476496A
Cited
US2530619A
Cited
US2501583A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |