Patent US2698029A successfully refreshed from Google Patents.
US2698029A
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Constant flow hot and cold water blending valve
Assignee: Robertshaw Controls Co
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Filing: 1950-07-07
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Granted: 1954-12-28
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Expires: 1970-07-07
Abstract
No abstract record available.
Inventors
- 👤 Charles D Branson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:36
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/13; G05D23/1393; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2559; Y10T137/2562; Y10T137/6416; Y10T137/6497; Y10T137/7722; Y10T137/7781; Y10T137/7784; Y10T137/7792; Y10T137/7832; Y10T137/794; Y10T137/8085; Y10T137/8593; Y10T137/87265; Y10T137/87281; Y10T137/87507; Y10T137/87571; Y10T137/87676; Y10T137/87684
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1698342A
Cited
US941596A
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US1635745A
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US2296266A
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US2321573A
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US2453409A
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US2542279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-27 | 1958-06-28 | 1958-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-27 | 1962-06-28 | 1962-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-27 | 1966-06-28 | 1966-12-28 | $7700.00 | Window Closed / Lapsed |