Patent US2878755A successfully refreshed from Google Patents.
US2878755A
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US
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Variable displacement pump and pressure responsive control means therefor
Assignee: Houdaille Industries Inc
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Filing: 1950-05-13
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Granted: 1959-03-24
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Expires: 1970-05-13
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
2026-11-01 21:48
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)
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US2254103A
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GB528950A
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US2238062A
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US2391323A
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US2490115A
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GB574359A
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US2433484A
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US2600632A
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US2649739A
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US2600633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |