Patent US3478991A successfully refreshed from Google Patents.
USRE25850E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable volume hydraulic pump
Assignee: —
•
Filing: —
•
Granted: 1965-09-07
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Expires: 1982-09-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:20
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/10; F04B53/12; F04B53/125; F04B53/126; F04B1/00; F04B1/12; F04B1/14; F04B49/00; F04B49/22; F04B49/24
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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |