US2645884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure regulating valve
Assignee: Individual
•
Filing: 1949-12-01
•
Granted: 1953-07-21
•
Expires: 1969-12-01
Abstract
No abstract record available.
Inventors
- 👤 Edward P Kellie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:37
CPC Classifications
F; F25; F25B; F25B41/00; F25B41/20; F25B41/22; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7822; Y10T137/7823; Y10T137/7826; Y10T137/7832; Y10T137/7835; Y10T137/7836; Y10T137/8593; Y10T137/86928; Y10T137/87016; Y10T137/87265; Y10T137/8733
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1953603A
Cited
US2111230A
Cited
US2237215A
Cited
US2218145A
Cited
US2351190A
Cited
US2365650A
Cited
US2488779A
Cited
US2508064A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-20 | 1957-01-19 | 1957-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-20 | 1961-01-19 | 1961-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-20 | 1965-01-19 | 1965-07-21 | $7700.00 | Window Closed / Lapsed |