US2497558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid valve assembly
Assignee: DONALD H REEVES AND ASSOCIATES
•
Filing: 1943-11-09
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Granted: 1950-02-14
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Expires: 1963-11-09
Abstract
No abstract record available.
Inventors
- 👤 Donald H Reeves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:50
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/022; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87056; Y10T137/87072; Y10T137/87571; Y10T137/87676; Y10T137/87684; Y10T137/87692
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US602737A
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US2172601A
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US721562A
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US963221A
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US1335946A
Cited
US1517956A
Cited
US1584895A
Cited
US1889295A
Cited
US2187581A
Cited
US2205684A
Cited
US2171992A
Cited
US2373739A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |