Patent US3986561A successfully refreshed from Google Patents.
Patent US2558651A successfully refreshed from Google Patents.
US2558651A
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Thermostatically controlled pressure regulating valve
Assignee: Alco Valve Co
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Filing: 1944-12-28
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Granted: 1951-06-26
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Expires: 1964-12-28
Abstract
No abstract record available.
Inventors
- 👤 Clifford B Ives
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:23
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/12; G05D23/125; G05D23/126; G05D23/127; G05D23/128; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7809; Y10T137/7812; Y10T137/7818; Y10T137/7819
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1747958A
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US1787146A
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US1920505A
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US2006035A
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US1974631A
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US2112344A
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US2231696A
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US2334803A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-25 | 1954-12-25 | 1955-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-25 | 1958-12-25 | 1959-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-25 | 1962-12-25 | 1963-06-26 | $7700.00 | Window Closed / Lapsed |