Patent US2942423A successfully refreshed from Google Patents.
US2942423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve, particularly for hydraulic control systems
Assignee: Individual
•
Filing: 1956-04-24
•
Granted: 1960-06-28
•
Expires: 1976-04-24
Abstract
No abstract record available.
Inventors
- 👤 Brand Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:37
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/16; B60T11/22; B60T11/228; F; F15; F15B; F15B7/00; F15B7/06; F15B7/10; F16; F16K; F16K15/00; F16K15/14; F16K15/141; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7771; Y10T137/7772; Y10T137/7773; Y10T137/7837; Y10T137/7879; Y10T137/7888
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1885121A
Cited
US2060846A
Cited
US2133575A
Cited
US2211652A
Cited
US2241112A
Cited
US2304991A
Cited
US2473168A
Cited
US2722103A
Cited
US2675758A
Cited
GB680283A
Cited
US2663540A
Cited
US2640432A
Cited
US2682149A
Cited
FR1039044A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |