Patent US3456593A successfully refreshed from Google Patents.
US3456593A
Expired / Lapsed
US
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Variable capacity mechanism for fluid pumps and motors
Assignee: Individual
•
Filing: 1967-06-26
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Granted: 1969-07-22
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Expires: 1987-06-26
Abstract
No abstract record available.
Inventors
- 👤 Oscar E Rosaen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:57
CPC Classifications
F; F04; F04C; F04C14/00; F04C14/18; F04C14/22; F04C14/223
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE502418A
Cited
US3117528A
Cited
DE415472C
Cited
US1693540A
Cited
US2170786A
Cited
US2238786A
Cited
US3272139A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |