US2724408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure control valve
Assignee: Dunlop Rubber Co Ltd
•
Filing: 1953-02-02
•
Granted: 1955-11-22
•
Expires: 1973-02-02
Abstract
No abstract record available.
Inventors
- 👤 Trevaskis Henry William
- 👤 Wilkins Leslie William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:50
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/04; B; B60; B60T; B60T13/00; B60T13/10; B60T13/12; B60T13/14; B60T13/141; B64; B64C; B64C25/00; B64C25/32; B64C25/42; B64C25/44; F15B13/06; F15B13/08; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87169
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-21 | 1959-05-23 | 1959-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-21 | 1963-05-23 | 1963-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-21 | 1967-05-23 | 1967-11-22 | $7700.00 | Window Closed / Lapsed |