Patent US2294487A successfully refreshed from Google Patents.
US2294487A
Expired / Lapsed
US
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Pressure regulator control valve
Assignee: Victor Equipment Co
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Filing: 1941-06-30
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Granted: 1942-09-01
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Expires: 1961-06-30
Abstract
No abstract record available.
Inventors
- 👤 Ludwig W Stettner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:40
CPC Classifications
G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0644; G05D16/0663; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7793; Y10T137/7822; Y10T137/7823; Y10T137/7826
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-08-31 | 1946-03-02 | 1946-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-08-31 | 1950-03-02 | 1950-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-08-31 | 1954-03-02 | 1954-09-01 | $7700.00 | Window Closed / Lapsed |