Patent US2676782A successfully refreshed from Google Patents.
US2676782A
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Valve seat with pressure movable sealing means for sealing with valve members
Assignee: Otis Engineering Corp
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Filing: 1948-11-01
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Granted: 1954-04-27
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Expires: 1968-11-01
Abstract
No abstract record available.
Inventors
- 👤 James H Bostock
- 👤 Robert A Hasty
- 👤 Herbert C Otis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:45
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/34; F16K1/46; F16K1/14; F16K15/00; F16K15/02; F16K15/04; F16K15/044; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7734; Y10T137/7738; Y10T137/7837; Y10T137/7866; Y10T137/7867; Y10T137/7868; Y10T137/7869; Y10T137/7876; Y10T137/7877; Y10T137/7904; Y10T137/7922; Y10T137/7927; Y10T137/7928; Y10T137/7929; Y10T137/7937
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-26 | 1957-10-26 | 1958-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-26 | 1961-10-26 | 1962-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-26 | 1965-10-26 | 1966-04-27 | $7700.00 | Window Closed / Lapsed |