US2921440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety devices for contained fluid pressure systems
Assignee: Alex Manufacturing Corp
•
Filing: 1957-10-03
•
Granted: 1960-01-19
•
Expires: 1977-10-03
Abstract
No abstract record available.
Inventors
- 👤 Feibush Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:38
CPC Classifications
B; B60; B60T; B60T11/00; B60T11/10; B60T11/28; B60T11/32; B60T11/323; F; F16; F16L; F16L2101/00; F16L2101/30; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/877; Y10T137/87708; Y10T137/8778
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB361532A
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US1936504A
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US2203908A
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US2093015A
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US2127849A
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US2195214A
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US2534871A
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US2615105A
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US2710620A
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US2833117A
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FR1083389A
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US2854016A
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US2811600A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |