US2517243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure controlled pump operating valve mechanism
Assignee: Alco Valve Co
•
Filing: 1944-02-26
•
Granted: 1950-08-01
•
Expires: 1964-02-26
Abstract
No abstract record available.
Inventors
- 👤 Howard E Rose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:42
CPC Classifications
F; F01; F01L; F01L25/00; F01L25/02; F01L25/04; F01L25/06; F04; F04B; F04B47/00; F04B47/02; F04B47/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1938758A
Cited
US1952690A
Cited
US2070720A
Cited
US2018215A
Cited
US2165966A
Cited
US2185448A
Cited
US2223792A
Cited
US2287709A
Cited
US2263086A
Cited
US2298457A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-31 | 1954-01-30 | 1954-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-31 | 1958-01-30 | 1958-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-31 | 1962-01-30 | 1962-08-01 | $7700.00 | Window Closed / Lapsed |