US3500753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injection pump apparatus
Assignee: Greene Research & Eng Co
•
Filing: 1968-04-16
•
Granted: 1970-03-17
•
Expires: 1988-04-16
Abstract
No abstract record available.
Inventors
- 👤 George J Greene Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:45
CPC Classifications
F; F04; F04B; F04B7/00; F04B7/04; F01; F01B; F01B17/00; F01B17/02; F01L; F01L21/00; F01L23/00; F02; F02M; F02M59/00; F02M59/02; F02M59/10; F02M59/107; F04B9/00; F04B9/08; F04B9/12; F04B9/123; F04B9/125; F04B9/1253
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB323303A
Cited
US2239298A
Cited
US2319608A
Cited
US2652973A
Cited
US2940720A
Cited
US2813516A
Cited
US2987047A
Cited
US3167326A
Cited
US3385218A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |