US2289868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Butterfly valve operating mechanism
Assignee: Ralph N Brodie Co
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Filing: 1940-12-16
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Granted: 1942-07-14
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Expires: 1960-12-16
Abstract
No abstract record available.
Inventors
- 👤 William F Berck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:17
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/22; F16K1/221; G; G01; G01F; G01F15/00; G01F15/001; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7313; Y10T137/7323; Y10T137/7358; Y10T137/742; Y10T137/7423; Y10T137/7439; Y10T137/7478; Y10T137/7485; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18232; Y10T74/1824
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) | 1945-07-13 | 1946-01-12 | 1946-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-07-13 | 1950-01-12 | 1950-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-07-13 | 1954-01-12 | 1954-07-14 | $7700.00 | Window Closed / Lapsed |