US2619112A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure relief valve
Assignee: Denison Engineering Co
•
Filing: 1946-06-12
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Granted: 1952-11-25
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Expires: 1966-06-12
Abstract
No abstract record available.
Inventors
- 👤 Wendell E Renick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:24
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/10; F16K17/105; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7764; Y10T137/7765; Y10T137/7766
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US230828A
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US235748A
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US534514A
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US832178A
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US851165A
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US973551A
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US1138241A
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US1357837A
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US2043453A
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US2375410A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-25 | 1956-05-26 | 1956-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-25 | 1960-05-26 | 1960-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-25 | 1964-05-26 | 1964-11-25 | $7700.00 | Window Closed / Lapsed |