Patent US3422767A successfully refreshed from Google Patents.
US3422767A
Expired / Lapsed
US
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Variable displacement swashplate pumps
Assignee: Webster Electric Co Inc
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Filing: 1966-12-05
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Granted: 1969-01-21
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Expires: 1986-12-05
Abstract
No abstract record available.
Inventors
- 👤 John C Mcalvay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:57
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/12; F04B1/20; F04B1/2014; F04B1/2078; F04B1/26; F04B1/30; F04B1/32; F04B1/324
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3075472A
Cited
US2915985A
Cited
US3159041A
Cited
US3190232A
Cited
US3282225A
Cited
US3319419A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |