US2722140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure actuated hydraulic differential control mechanism
Assignee: Individual
•
Filing: 1954-02-02
•
Granted: 1955-11-01
•
Expires: 1974-02-02
Abstract
No abstract record available.
Inventors
- 👤 Foraker A Cabell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:56
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/02; F16H57/037; F16H48/00; F16H48/06; F16H48/08; F16H48/20; F16H48/27; F16H48/30; F16H48/32; F16H2048/085; F16H2048/087; F16H2048/305; F16H48/38; F16H48/40; F16H2048/405; F16H48/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1529942A
Cited
US1916715A
Cited
DE679643C
Cited
US2375938A
Cited
US2627190A
Cited
US2655055A
Cited
US2650507A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-31 | 1959-05-02 | 1959-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-31 | 1963-05-02 | 1963-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-31 | 1967-05-02 | 1967-11-01 | $7700.00 | Window Closed / Lapsed |