Patent US2634949A successfully refreshed from Google Patents.
US2634949A
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Rotary valve with indexing and locking devices
Assignee: CERTIFIED GAS EQUIPMENT Corp
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Filing: 1947-11-25
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Granted: 1953-04-14
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Expires: 1967-11-25
Abstract
No abstract record available.
Inventors
- 👤 Robinson William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:00
CPC Classifications
F; F16; F16K; F16K35/00; F16K35/02; F16K35/027; F16K3/00; F16K3/02; F16K3/04; F16K3/06; F16K3/08; Y; Y10; Y10S; Y10S137/00; Y10S137/905; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1395001A
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US1786330A
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US2069017A
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US2126020A
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US2142368A
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US2220346A
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US2215248A
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US2361655A
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US2362364A
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US2344956A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-13 | 1956-10-13 | 1957-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-13 | 1960-10-13 | 1961-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-13 | 1964-10-13 | 1965-04-14 | $7700.00 | Window Closed / Lapsed |