US2924423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic emergency shut-off valve assembly
Assignee: Fawick Corp
•
Filing: 1956-06-14
•
Granted: 1960-02-09
•
Expires: 1976-06-14
Abstract
No abstract record available.
Inventors
- 👤 Thomas D Weiser
- 👤 Bennett J Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:32
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/36; B; B60; B60T; B60T11/00; B60T11/10; B60T11/28; B60T11/32; B60T11/326; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6855; Y10T137/6881
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US833554A
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US1609879A
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US1454367A
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US2196120A
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US2312549A
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US2550379A
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GB698319A
Cited
US2785773A
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US2711303A
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US2778599A
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US2800980A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-08 | 1963-08-10 | 1964-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-08 | 1967-08-10 | 1968-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-08 | 1971-08-10 | 1972-02-09 | $7700.00 | Window Closed / Lapsed |