Patent US2573522A successfully refreshed from Google Patents.
US2573522A
Expired / Lapsed
US
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Valve with vibration damper
Assignee: Motors Liquidation Co
•
Filing: 1947-09-08
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Granted: 1951-10-30
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Expires: 1967-09-08
Abstract
No abstract record available.
Inventors
- 👤 Watt William Wilbur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:55
CPC Classifications
F; F25; F25B; F25B41/00; F25B41/30; F25B41/31; F25B41/33; F25B2500/00; F25B2500/13; Y; Y10; Y10T; Y10T137/00; Y10T137/1842; Y10T137/1939; Y10T137/1963
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US378609A
Cited
US417112A
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US2178974A
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US2158436A
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US2158715A
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US2216296A
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US2318161A
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US2365650A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-29 | 1955-04-30 | 1955-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-29 | 1959-04-30 | 1959-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-29 | 1963-04-30 | 1963-10-30 | $7700.00 | Window Closed / Lapsed |