US2592992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure cooker relief valve
Assignee: KAREN PRODUCTS Inc
•
Filing: 1946-01-21
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Granted: 1952-04-15
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Expires: 1966-01-21
Abstract
No abstract record available.
Inventors
- 👤 Charles W Abercrombie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:57
CPC Classifications
A; A47; A47J; A47J27/00; A47J27/08; A47J27/09; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7878; Y10T137/7904; Y10T137/7908
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US243847A
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US1383389A
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US929973A
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GB169047A
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US1676650A
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US1823595A
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US1812888A
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US1915899A
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US2188735A
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US2200903A
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US2467716A
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US2456134A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-15 | 1955-10-15 | 1956-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-15 | 1959-10-15 | 1960-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-15 | 1963-10-15 | 1964-04-15 | $7700.00 | Window Closed / Lapsed |