Patent US2693760A successfully refreshed from Google Patents.
US2693760A
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Pumping apparatus
Assignee: Westinghouse Electric Corp
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Filing: 1951-11-29
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Granted: 1954-11-09
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Expires: 1971-11-29
Abstract
No abstract record available.
Inventors
- 👤 Ernest F Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:12
CPC Classifications
F; F04; F04D; F04D1/00; F04D1/06; F04D1/063; F04D1/066; F04D29/00; F04D29/60; F04D29/605; F04D29/606; F04D9/00; F04D9/02; Y; Y10; Y10S; Y10S415/00; Y10S415/901; Y10S415/913
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1079682A
Cited
US2514865A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-08 | 1958-05-10 | 1958-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-08 | 1962-05-10 | 1962-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-08 | 1966-05-10 | 1966-11-09 | $7700.00 | Window Closed / Lapsed |