US2497557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid valve assembly
Assignee: DONALD H REEVES AND ASSOCIATES
•
Filing: 1943-11-02
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Granted: 1950-02-14
•
Expires: 1963-11-02
Abstract
No abstract record available.
Inventors
- 👤 Donald H Reeves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:40
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/52; F16K31/524; F16K31/52491; F16K7/00; F16K7/12; F16K7/14; F16K7/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US619216A
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US1315828A
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US1605765A
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US941703A
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FR414091A
Cited
US995016A
Cited
US1078875A
Cited
US2089977A
Cited
FR731300A
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 |