US2965040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gear pumps
Assignee: ECO ENGINEERING Co
•
Filing: 1958-07-21
•
Granted: 1960-12-20
•
Expires: 1978-07-21
Abstract
No abstract record available.
Inventors
- 👤 Eisenberg James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:53
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/12; F04C2/14; F04C2/18; F04C15/00; F04C15/0003; F04C15/0023; F04C15/0026; F04C2240/00; F04C2240/50; F04C2240/51; F05; F05C; F05C2225/00; F05C2225/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1271970A
Cited
US1379587A
Cited
US1673261A
Cited
US2775209A
Cited
US2549659A
Cited
US2663599A
Cited
US2714857A
Cited
US2809592A
Cited
GB750060A
Cited
US2825286A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |