US2961968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal pump and priming pump assembly
Assignee: Waterous Co
•
Filing: 1958-07-14
•
Granted: 1960-11-29
•
Expires: 1978-07-14
Abstract
No abstract record available.
Inventors
- 👤 David F Thomas
- 👤 Robert A Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:44
CPC Classifications
F; F04; F04D; F04D9/00; F04D9/04; F04D9/041; F04D9/042; F04D9/044; F04D9/048
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2660956A
Cited
US2701530A
Cited
US2683420A
Cited
US2780998A
Cited
US2790393A
Cited
US2863628A
Cited
US2799466A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |