US2949926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve operated by the action of liquid
Assignee: Institut de Recherches de la Siderurgie Francaise IRSID
•
Filing: 1956-03-23
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Granted: 1960-08-23
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Expires: 1976-03-23
Abstract
No abstract record available.
Inventors
- 👤 Hanin Mireille
- 👤 Voeltzel Jacques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:15
CPC Classifications
F; F16; F16K; F16K13/00; F16K13/08; F16K13/10; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3084; Y10T137/309; Y10T137/3099
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US710480A
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US843069A
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US1159817A
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US1593680A
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DE405411C
Cited
FR669998A
Cited
GB441795A
Cited
US2475602A
Cited
US2708944A
Cited
US2787376A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |