US2827924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control valves
Assignee: Electraulic Presses Ltd
•
Filing: 1953-03-12
•
Granted: 1958-03-25
•
Expires: 1973-03-12
Abstract
No abstract record available.
Inventors
- 👤 Towler Frank Hathorn
- 👤 Towler John Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:09
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/06; F16K11/072; F16K11/076; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86501; Y10T137/86509; Y10T137/86517; Y10T137/86533; Y10T137/86831; Y10T137/86863
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US708785A
Cited
US885145A
Cited
US2335085A
Cited
US2384318A
Cited
US2510514A
Cited
US2524234A
Cited
US2742050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |