US2678607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant pressure variable displacement pump
Assignee: Houdaille Hershey Corp
•
Filing: 1948-04-02
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Granted: 1954-05-18
•
Expires: 1968-04-02
Abstract
No abstract record available.
Inventors
- 👤 George H Hufferd
- 👤 Bernard E O'connor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:05
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)
US1943929A
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US2062310A
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GB489955A
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US2238061A
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GB528950A
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US2238062A
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US2296876A
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US2451279A
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US2433484A
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US2451666A
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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) | 1957-05-17 | 1957-11-16 | 1958-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-17 | 1961-11-16 | 1962-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-17 | 1965-11-16 | 1966-05-18 | $7700.00 | Window Closed / Lapsed |