Patent US2234598A successfully refreshed from Google Patents.
Patent US3481253A successfully refreshed from Google Patents.
US3481253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid power actuators
Assignee: Serck Industries Ltd
•
Filing: 1968-01-22
•
Granted: 1969-12-02
•
Expires: 1988-01-22
Abstract
No abstract record available.
Inventors
- 👤 Terence J Floyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:46
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/08; F15B15/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2250734A
Cited
US2296213A
Cited
CH245166A
Cited
US3137214A
Cited
US3144812A
Cited
US3099222A
Cited
US3229590A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |