Patent US2657529A successfully refreshed from Google Patents.
Patent US2295774A successfully refreshed from Google Patents.
US2295774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump valve
Assignee: Individual
•
Filing: 1941-02-26
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Granted: 1942-09-15
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Expires: 1961-02-26
Abstract
No abstract record available.
Inventors
- 👤 Corydon Jeff
- 👤 Herbert E Hollberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:14
CPC Classifications
F; F04; F04B; F04B15/00; F04B15/04; F04B43/00; F04B43/02; F04B53/00; F04B53/10; F04B53/102; F04B53/1072; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-09-14 | 1946-03-16 | 1946-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-09-14 | 1950-03-16 | 1950-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-09-14 | 1954-03-16 | 1954-09-15 | $7700.00 | Window Closed / Lapsed |