Patent US2902942A successfully refreshed from Google Patents.
US2902942A
Expired / Lapsed
US
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Rotary pumps
Assignee: STANDARD RES CONSULTANTS Inc
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Filing: 1956-06-26
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Granted: 1959-09-08
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Expires: 1976-06-26
Abstract
No abstract record available.
Inventors
- 👤 Pelladeau Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:15
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/30; F04C2/34; F04C2/344; F04C2/3448
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2593457A
Cited
US1238501A
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US1276372A
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US1460988A
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US1936467A
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US2154456A
Cited
US2142867A
Cited
US2318386A
Cited
US2377886A
Cited
US2672099A
Cited
US2688385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |