US2762312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vane type pump
Assignee: Denison Engineering Co
•
Filing: 1951-05-17
•
Granted: 1956-09-11
•
Expires: 1971-05-17
Abstract
No abstract record available.
Inventors
- 👤 Cecil E Adams
- 👤 John R English
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:30
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/30; F04C2/34; F04C2/344; F04C2/3446; F01; F01C; F01C21/00; F01C21/08; F01C21/0809; F04C15/00; F04C15/0042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE466105C
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US711239A
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GB243388A
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US1737942A
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US1795579A
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US1989900A
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US2335284A
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US2311162A
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US2256459A
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US2387761A
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US2411602A
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US2460047A
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GB594441A
Cited
US2588430A
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US2498911A
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US2626570A
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US2641195A
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US2653551A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |