Patent US2810398A successfully refreshed from Google Patents.
US2810398A
Expired / Lapsed
US
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Drain and vacuum breaker valve
Assignee: ITT Bell and Gossett Inc
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Filing: 1954-07-09
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Granted: 1957-10-22
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Expires: 1974-07-09
Abstract
No abstract record available.
Inventors
- 👤 Gilbert F Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:52
CPC Classifications
F; F24; F24D; F24D19/00; F24D19/08; F24D19/082; F24D19/088; F16; F16K; F16K24/00; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86292; Y10T137/86324; Y10T137/86332
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US553389A
Cited
US849724A
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US1054146A
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US1667034A
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US2046474A
Cited
US2333310A
Cited
US2264671A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |