US2724339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatically and selectively adjustable variable displacement pump
Assignee: Houdaille Hershey Corp
•
Filing: 1949-06-25
•
Granted: 1955-11-22
•
Expires: 1969-06-25
Abstract
No abstract record available.
Inventors
- 👤 Bernard E O'connor
- 👤 Alfred G French
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:35
CPC Classifications
F; F04; F04C; F04C14/00; F04C14/18; F04C14/22; F04C14/223
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US334079A
Cited
US344501A
Cited
US559379A
Cited
GB154632A
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US1943929A
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US2062310A
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US2031749A
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US2080810A
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US2142275A
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GB528950A
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US2214817A
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US2238062A
Cited
US2238063A
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US2291424A
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US2296876A
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US2420155A
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GB574359A
Cited
US2564237A
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US2606503A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-21 | 1959-05-23 | 1959-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-21 | 1963-05-23 | 1963-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-21 | 1967-05-23 | 1967-11-22 | $7700.00 | Window Closed / Lapsed |