US2645450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid valve means
Assignee: C B Hunt & Son Inc
•
Filing: 1948-11-26
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Granted: 1953-07-14
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Expires: 1968-11-26
Abstract
No abstract record available.
Inventors
- 👤 Samuel C Chessman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:56
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/04; F16K27/041; Y; Y10; Y10S; Y10S285/00; Y10S285/918; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86694; Y10T137/86702; Y10T137/86879
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |