US3545897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump
Assignee: Peters and Russell Inc
•
Filing: 1968-09-18
•
Granted: 1970-12-08
•
Expires: 1988-09-18
Abstract
No abstract record available.
Inventors
- 👤 Linus E Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:19
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/02; F04B53/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2415060A
Cited
US2469818A
Cited
US2625113A
Cited
US2779353A
Cited
US2895424A
Cited
US2980031A
Cited
US3282224A
Cited
US3308765A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |