Patent US2631412A successfully refreshed from Google Patents.
US2631412A
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US
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Pressure reducing valve
Assignee: Beaton & Cadwell Manufacturing Co
•
Filing: 1949-02-12
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Granted: 1953-03-17
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Expires: 1969-02-12
Abstract
No abstract record available.
Inventors
- 👤 Erich W Work
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:19
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0644; G05D16/0655; G05D16/0616; G05D16/0619; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7801
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US374485A
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US853503A
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US1576686A
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US1903248A
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US1950121A
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US2091051A
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US1937565A
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US2301031A
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US2318721A
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US2487089A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |