Patent EP0031022A1 successfully refreshed from Google Patents.
US2924943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic actuating mechanism
Assignee: Armstrong Patents Co Ltd
•
Filing: 1957-06-24
•
Granted: 1960-02-16
•
Expires: 1977-06-24
Abstract
No abstract record available.
Inventors
- 👤 Dickinson Ronald Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:21
CPC Classifications
F; F15; F15B; F15B7/00; F15B7/06; F15B7/08; F15B7/005; F15B7/008
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2084368A
Cited
US2192175A
Cited
US2339728A
Cited
US2544134A
Cited
US2397270A
Cited
US2431210A
Cited
US2540879A
Cited
US2608060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-15 | 1963-08-17 | 1964-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-15 | 1967-08-17 | 1968-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-15 | 1971-08-17 | 1972-02-16 | $7700.00 | Window Closed / Lapsed |