Patent US2724463A successfully refreshed from Google Patents.
Patent US2545774A successfully refreshed from Google Patents.
US2545774A
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US
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Rotary fluid motor and valve means for controlling the same
Assignee: Individual
•
Filing: 1946-02-25
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Granted: 1951-03-20
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Expires: 1966-02-25
Abstract
No abstract record available.
Inventors
- 👤 Donald G Griswold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:40
CPC Classifications
F; F03; F03C; F03C7/00; F03C1/00; F03C1/02; F03C1/04; F03C1/0403; F03C1/0435; F03C1/0444; F16; F16K; F16K15/00; F16K15/14; F16K15/144
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US196070A
Cited
US242875A
Cited
DE362522C
Cited
US717445A
Cited
US820345A
Cited
US1488528A
Cited
US1957697A
Cited
FR713727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-19 | 1954-09-18 | 1955-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-19 | 1958-09-18 | 1959-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-19 | 1962-09-18 | 1963-03-20 | $7700.00 | Window Closed / Lapsed |