Patent US2601531A successfully refreshed from Google Patents.
US2601531A
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Fluid actuated control valve
Assignee: Black Sivalls and Bryson Inc
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Filing: 1948-05-15
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Granted: 1952-06-24
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Expires: 1968-05-15
Abstract
No abstract record available.
Inventors
- 👤 Garman O Kimmell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:55
CPC Classifications
F; F15; F15B; F15B13/00; F15B13/02; F15B13/04; F15B13/0401; F15B13/0405; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86582; Y10T137/86606
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US50218A
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US335855A
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US358804A
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US400919A
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US485046A
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US1058804A
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US2208421A
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US2451449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-24 | 1955-12-24 | 1956-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-24 | 1959-12-24 | 1960-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-24 | 1963-12-24 | 1964-06-24 | $7700.00 | Window Closed / Lapsed |