Patent US543695A successfully refreshed from Google Patents.
Patent US2595012A successfully refreshed from Google Patents.
US2595012A
Expired / Lapsed
US
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Spring biased valve seat seal
Assignee: Maytag Corp
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Filing: 1947-04-03
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Granted: 1952-04-29
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Expires: 1967-04-03
Abstract
No abstract record available.
Inventors
- 👤 Thomas R Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:04
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/34; F16K1/46; F16K1/36; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86928; Y10T137/87016
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB189617847A
Cited
US1764991A
Cited
US2179165A
Cited
US2131928A
Cited
US2311110A
Cited
US2394243A
Cited
US2403029A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-29 | 1955-10-29 | 1956-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-29 | 1959-10-29 | 1960-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-29 | 1963-10-29 | 1964-04-29 | $7700.00 | Window Closed / Lapsed |