US2913993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature hydraulic pump
Assignee: Commonwealth Engineering Company of Ohio
•
Filing: 1953-05-18
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Granted: 1959-11-24
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Expires: 1973-05-18
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry A Toulmin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:56
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/12; F04B1/20; F04B1/122; F04B15/00; F04B15/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2241701A
Cited
US2304182A
Cited
GB543619A
Cited
GB548998A
Cited
US2504388A
Cited
GB662105A
Cited
US2633104A
Cited
US2632752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |