Patent US2280309A successfully refreshed from Google Patents.
US2280309A
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Valve device
Assignee: Temprite Products Corp
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Filing: 1940-11-02
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Granted: 1942-04-21
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Expires: 1960-11-02
Abstract
No abstract record available.
Inventors
- 👤 Frank O Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:45
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/164; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7723; Y10T137/7728; Y10T137/7781; Y10T137/7793; Y10T137/7795; Y10T137/7809; Y10T137/7812; Y10T137/7813; Y10T137/8593; Y10T137/86928; Y10T137/86936; Y10T137/86944; Y10T137/86976; Y10T137/86984; Y10T137/87917; Y10T137/88046
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) | 1945-04-20 | 1945-10-20 | 1946-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-04-20 | 1949-10-20 | 1950-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-04-20 | 1953-10-20 | 1954-04-21 | $7700.00 | Window Closed / Lapsed |