Patent US2537798A successfully refreshed from Google Patents.
US2537798A
Expired / Lapsed
US
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Free eccentric type valve with external seal cap
Assignee: Maytag Corp
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Filing: 1946-02-02
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Granted: 1951-01-09
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Expires: 1966-02-02
Abstract
No abstract record available.
Inventors
- 👤 Thomas R Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:02
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US131216A
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US818054A
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US1071753A
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GB191400309A
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US1290583A
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US1785259A
Cited
US2002672A
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US2397269A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |