Patent US3039491A successfully refreshed from Google Patents.
US3039491A
Expired / Lapsed
US
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Valve mechanism for fluid systems
Assignee: Robertshaw US Holding Corp
•
Filing: 1959-07-15
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Granted: 1962-06-19
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Expires: 1979-07-15
Abstract
No abstract record available.
Inventors
- 👤 Estel C Raney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:49
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/40; F25; F25B; F25B41/00; F25B41/20; F25B41/26; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/2554; Y10T137/8593; Y10T137/87169; Y10T137/87193; Y10T137/87201; Y10T137/87209; Y10T137/87265; Y10T137/87499
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR438322A
Cited
US2616449A
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US2641281A
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US2672887A
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US2802484A
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US2875780A
Cited
US2775982A
Cited
DE1032052B
Cited
US2765628A
Cited
US2823691A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |