US3371682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide valves
Assignee: Dowty Hydraulic Units Ltd
•
Filing: 1965-11-19
•
Granted: 1968-03-05
•
Expires: 1985-11-19
Abstract
No abstract record available.
Inventors
- 👤 John C E Flint
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:48
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/02; F16K3/04; F16K3/06; F15; F15B; F15B13/00; F15B13/02; F15B13/06; F15B13/08; F16K11/00; F16K11/02; F16K11/06; F16K11/065; F16K11/0655; F16K11/10; F16K11/20; F16K11/22; Y; Y10; Y10T; Y10T137/00; Y10T137/5109; Y10T137/5283; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/87169; Y10T137/87177; Y10T137/87233
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2675830A
Cited
US2875782A
Cited
US2924240A
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US2986165A
Cited
US3057551A
Cited
US2951505A
Cited
US2989985A
Cited
US3103233A
Cited
US3194265A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |