Patent US2633803A successfully refreshed from Google Patents.
US2633803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary pump or motor
Assignee: Individual
•
Filing: 1947-05-22
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Granted: 1953-04-07
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Expires: 1967-05-22
Abstract
No abstract record available.
Inventors
- 👤 William J Carey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:20
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/30; F04C2/34; F04C2/344; F04C2/3448
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US750219A
Cited
DE172602C
Cited
FR539370A
Cited
GB203342A
Cited
US2029520A
Cited
US2311162A
Cited
US2493478A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-06 | 1956-10-06 | 1957-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-06 | 1960-10-06 | 1961-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-06 | 1964-10-06 | 1965-04-07 | $7700.00 | Window Closed / Lapsed |