Patent US2601549A successfully refreshed from Google Patents.
US2601549A
Expired / Lapsed
US
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Restricting valve
Assignee: Admiral Corp
•
Filing: 1947-01-02
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Granted: 1952-06-24
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Expires: 1967-01-02
Abstract
No abstract record available.
Inventors
- 👤 Evans T Morton
- 👤 George R Heidenblut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:33
CPC Classifications
F; F25; F25B; F25B5/00; F25B41/00; F25B41/20; F25D; F25D11/00; F25D11/02; F25D11/025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US563879A
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US811064A
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US1140623A
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US1271670A
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GB214451A
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US1523112A
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US2374895A
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US2519578A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-24 | 1955-12-24 | 1956-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-24 | 1959-12-24 | 1960-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-24 | 1963-12-24 | 1964-06-24 | $7700.00 | Window Closed / Lapsed |