US2912937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pump or injector
Assignee: Individual
•
Filing: 1957-03-25
•
Granted: 1959-11-17
•
Expires: 1977-03-25
Abstract
No abstract record available.
Inventors
- 👤 Bert T Insley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:01
CPC Classifications
F; F04; F04C; F04C14/00; F04C14/10; F04C14/16; F02; F02M; F02M41/00; F02M41/08; F04C14/24; F04C14/26; F02M2700/00; F02M2700/13; F02M2700/1317; F02M2700/1329
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191219872A
Cited
FR578962A
Cited
US1757282A
Cited
US1969881A
Cited
FR855322A
Cited
US2359558A
Cited
US2751847A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |