Patent US3137243A successfully refreshed from Google Patents.
US3137243A
Expired / Lapsed
US
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Hydraulic pumps or motors
Assignee: Dowty Hydraulic Units Ltd
•
Filing: 1959-06-05
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Granted: 1964-06-16
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Expires: 1979-06-05
Abstract
No abstract record available.
Inventors
- 👤 Beck George
- 👤 Bowers Eric Hider
- 👤 Brown Peter Henry
- 👤 Thoma Oswald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:55
CPC Classifications
F; F01; F01B; F01B3/00; F01B3/0032; F01B3/0044; F01B3/007; F01B3/0073; F01B3/0052; Y; Y10; Y10S; Y10S464/00; Y10S464/904; Y10S464/905; Y10S464/906; Y10T; Y10T74/00; Y10T74/18; Y10T74/18024
Claims Analysis
Total Claims: 0
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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) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |