US2998826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary pump valve
Assignee: N G N ELECTRICAL Ltd
•
Filing: 1959-10-20
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Granted: 1961-09-05
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Expires: 1979-10-20
Abstract
No abstract record available.
Inventors
- 👤 Sadler Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:41
CPC Classifications
F; F04; F04C; F04C29/00; F04C29/12; F04C29/124; F04C29/126; F04C29/128; F16; F16K; F16K15/00; F16K15/14; F16K15/144; F16K15/147; F16K5/00; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7843; Y10T137/7859; Y10T137/7879; Y10T137/788; Y10T137/7881
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE147855C
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US157791A
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US2186082A
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US2201837A
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US2247520A
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US2378384A
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US2348097A
Cited
US2630178A
Cited
US2670757A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-04 | 1965-03-06 | 1965-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-04 | 1969-03-06 | 1969-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-04 | 1973-03-06 | 1973-09-05 | $7700.00 | Window Closed / Lapsed |