US3424061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic control cylinder and air piston assembly
Assignee: Individual
•
Filing: 1965-08-26
•
Granted: 1969-01-28
•
Expires: 1985-08-26
Abstract
No abstract record available.
Inventors
- 👤 Alan C Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:59
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/06; F15B11/072; F15B11/076; F15B21/00; F15B21/10; F16; F16F; F16F9/00; F16F9/10; F16F9/14; F16F9/16; F16F9/18; F16F9/19
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2342729A
Cited
US2410992A
Cited
US2649842A
Cited
GB708582A
Cited
DE939064C
Cited
US2774447A
Cited
DE1006219B
Cited
GB821319A
Cited
US2950785A
Cited
US2930072A
Cited
US3070191A
Cited
US3200596A
Cited
US3149541A
Cited
US3313214A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |