Patent US2563200A successfully refreshed from Google Patents.
US2563200A
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Automatic relief valve
Assignee: John Venning & Co Ltd
•
Filing: 1945-10-29
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Granted: 1951-08-07
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Expires: 1965-10-29
Abstract
No abstract record available.
Inventors
- 👤 Venning John Daniel Eldret
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:05
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/14; F16K15/16; F16K15/162; F16K17/00; F16K17/02; F16K17/04; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3084; Y10T137/3087; Y10T137/7504; Y10T137/7722; Y10T137/7837; Y10T137/7866; Y10T137/7869; Y10T137/7875; Y10T137/7879; Y10T137/7888; Y10T137/7891
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US249557A
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US1494176A
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US1694626A
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US1660588A
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US1749128A
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US1897174A
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US2120852A
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US2217380A
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US2241573A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |