Patent US2829500A successfully refreshed from Google Patents.
US2829500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure actuated system and operating means therefor
Assignee: Dunlop Rubber Co Ltd
•
Filing: 1954-12-03
•
Granted: 1958-04-08
•
Expires: 1974-12-03
Abstract
No abstract record available.
Inventors
- 👤 Butler Henry James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:41
CPC Classifications
F; F16; F16H; F16H21/00; F16H21/10; F16H21/44; F15; F15B; F15B7/00; F15B7/06; F15B7/08; F16H25/00; F16H25/18; F16H25/183; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18992; Y10T74/20; Y10T74/20576; Y10T74/20582; Y10T74/20588
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1430746A
Cited
US1951224A
Cited
US2209595A
Cited
US2175447A
Cited
US2168719A
Cited
US2341318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |