US2911916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve for direct pressure shallow well pumping system
Assignee: STA RITE PRODUCTS Inc
•
Filing: 1953-10-01
•
Granted: 1959-11-10
•
Expires: 1973-10-01
Abstract
No abstract record available.
Inventors
- 👤 Carl M Bliss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:18
CPC Classifications
F; F04; F04D; F04D13/00; F04D13/16; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3115; Y10T137/3127; Y10T137/3137
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US879472A
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US1541112A
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US1938956A
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US2183421A
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US2120866A
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US2619036A
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US2761389A
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US2694365A
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US2709964A
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US2708881A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |