US2543846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick-operating pressure relief valve
Assignee: Clayton Manufacturing Co
•
Filing: 1944-02-29
•
Granted: 1951-03-06
•
Expires: 1964-02-29
Abstract
No abstract record available.
Inventors
- 👤 Donald G Griswold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:56
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; Y10T137/7769
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US143920A
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US703687A
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US1398151A
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US1611079A
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GB229147A
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US1828517A
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GB258163A
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US1800608A
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US1985257A
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US2239148A
Cited
US2328007A
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US2377227A
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US2368981A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-05 | 1954-09-04 | 1955-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-05 | 1958-09-04 | 1959-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-05 | 1962-09-04 | 1963-03-06 | $7700.00 | Window Closed / Lapsed |