US2580127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure relief valve means
Assignee: Denison Engineering Co
•
Filing: 1944-09-14
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Granted: 1951-12-25
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Expires: 1964-09-14
Abstract
No abstract record available.
Inventors
- 👤 Wendell E Renick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:09
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/0473; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7764; Y10T137/7765
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US120958A
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US235748A
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US382643A
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US1355149A
Cited
GB200613A
Cited
US1719686A
Cited
US1934758A
Cited
GB540596A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |