Patent US2381926A successfully refreshed from Google Patents.
US2381926A
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US
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Control apparatus
Assignee: Individual
•
Filing: 1941-05-20
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Granted: 1945-08-14
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Expires: 1961-05-20
Abstract
No abstract record available.
Inventors
- 👤 William A Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:20
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F23; F23N; F23N5/00; F23N5/02; F23N5/10; F23N2239/00; F23N2239/06; Y; Y10; Y10T; Y10T137/00; Y10T137/1407; Y10T137/1516; Y10T137/7722; Y10T137/7723; Y10T137/7724; Y10T74/00; Y10T74/22
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) | 1948-08-13 | 1949-02-12 | 1949-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-08-13 | 1953-02-12 | 1953-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-08-13 | 1957-02-12 | 1957-08-14 | $7700.00 | Window Closed / Lapsed |