Patent US2747802A successfully refreshed from Google Patents.
US2747802A
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Pressure and temperature relief valves
Assignee: McDonnell and Miller Inc
•
Filing: 1952-02-08
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Granted: 1956-05-29
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Expires: 1972-02-08
Abstract
No abstract record available.
Inventors
- 👤 Leopold J Kmiecik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:09
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/003; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7738
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2031558A
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US1927036A
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US2112665A
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US2268359A
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US2351190A
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US2469930A
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US2506737A
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US2598351A
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US2548878A
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US2570432A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |