US2549387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety pressure cooker
Assignee: JOSEPH A ALLEGRO
•
Filing: 1946-08-22
•
Granted: 1951-04-17
•
Expires: 1966-08-22
Abstract
No abstract record available.
Inventors
- 👤 Sanford E Richeson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:59
CPC Classifications
A; A47; A47J; A47J27/00; A47J27/08; A47J27/09; A47J27/092; Y; Y10; Y10T; Y10T292/00; Y10T292/42; Y10T292/438
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US923545A
Cited
US1818581A
Cited
US2203801A
Cited
US2164478A
Cited
US2177123A
Cited
US2399115A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-16 | 1954-10-16 | 1955-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-16 | 1958-10-16 | 1959-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-16 | 1962-10-16 | 1963-04-17 | $7700.00 | Window Closed / Lapsed |