Patent US4969907A successfully refreshed from Google Patents.
US2390749A
Expired / Lapsed
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Steam trap governor
Assignee: Individual
•
Filing: 1943-06-18
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Granted: 1945-12-11
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Expires: 1963-06-18
Abstract
No abstract record available.
Inventors
- 👤 Swift Bert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:32
CPC Classifications
F; F16; F16T; F16T1/00; F16T1/38; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3021; Y10T137/304; Y10T137/3052; Y10T137/3068; Y10T137/7722; Y10T137/7837; Y10T137/7869; Y10T137/7871; Y10T137/7873; Y10T137/794; Y10T137/8122; Y10T137/8593; Y10T137/87265; Y10T137/87539
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-12-10 | 1949-06-11 | 1949-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-12-10 | 1953-06-11 | 1953-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-12-10 | 1957-06-11 | 1957-12-11 | $7700.00 | Window Closed / Lapsed |