Patent US2582105A successfully refreshed from Google Patents.
US2582105A
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US
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Device for shutting off gases from pipe lines
Assignee: Individual
•
Filing: 1947-08-22
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Granted: 1952-01-08
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Expires: 1967-08-22
Abstract
No abstract record available.
Inventors
- 👤 John T Cronkhite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:01
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/42; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3009; Y10T137/3012; Y10T137/3021; Y10T137/304; Y10T137/3052; Y10T137/3068; Y10T137/3084; Y10T137/309; Y10T137/3099; Y10T137/7287; Y10T137/7313; Y10T137/7323; Y10T137/8593; Y10T137/86928; Y10T137/86936
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1556760A
Cited
US2045909A
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US2216296A
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US2210751A
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US2239590A
Cited
US2322304A
Cited
US2496518A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |