US2496915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable delivery pump
Assignee: SUPERDRAULIC Corp
•
Filing: 1946-02-20
•
Granted: 1950-02-07
•
Expires: 1966-02-20
Abstract
No abstract record available.
Inventors
- 👤 James F Hoffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:36
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/04; F04B1/0404; F04B1/0439; F04B1/06; F04B1/07; F04B1/10; F04B1/107; F04B1/1071; F04B1/1074; F04B1/1077; F04B49/00; F04B49/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US866047A
Cited
US1189319A
Cited
US1575519A
Cited
US1695289A
Cited
GB269747A
Cited
US1669976A
Cited
US2227631A
Cited
US2220636A
Cited
US2359513A
Cited
US2439668A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-06 | 1953-08-08 | 1954-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-06 | 1957-08-08 | 1958-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-06 | 1961-08-08 | 1962-02-07 | $7700.00 | Window Closed / Lapsed |