Patent US2497664A successfully refreshed from Google Patents.
US2497664A
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Pressure control valve
Assignee: Mueller Brass Co
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Filing: 1946-06-19
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Granted: 1950-02-14
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Expires: 1966-06-19
Abstract
No abstract record available.
Inventors
- 👤 John E Gray
- 👤 Jr Robert A Gray
- 👤 William M Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:02
CPC Classifications
F; F25; F25B; F25B41/00; F25B41/30; F25B41/31; F25B41/325; F25B41/32; F25B41/33; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87265; Y10T137/87539; Y10T137/87547
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |