Patent US2749941A successfully refreshed from Google Patents.
US2749941A
Expired / Lapsed
US
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Rotary fluid control valve
Assignee: Individual
•
Filing: 1950-06-01
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Granted: 1956-06-12
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Expires: 1970-06-01
Abstract
No abstract record available.
Inventors
- 👤 Evelyn M Gardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:28
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/04; F16; F16K; F16K39/00; F16K39/06; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86638; Y10T137/86646; Y10T137/86654; Y10T137/86839
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US849724A
Cited
US1576063A
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US1814534A
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US2182459A
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US2313257A
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US2312941A
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US2398542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |