US2429149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure release device
Assignee: NAT PRESSURE COOKER CO
•
Filing: 1944-10-02
•
Granted: 1947-10-14
•
Expires: 1964-10-02
Abstract
No abstract record available.
Inventors
- 👤 Edward H Wittenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:30
CPC Classifications
A; A47; A47J; A47J27/00; A47J27/08; A47J27/09; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/7722; Y10T137/7837; Y10T137/7869; Y10T137/7871; Y10T292/00; Y10T292/20; Y10T292/205; Y10T292/209
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1423323A
Cited
US943951A
Cited
US1749128A
Cited
US1990601A
Cited
US2301724A
Cited
US2195266A
Cited
US2254557A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-13 | 1951-04-14 | 1951-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-13 | 1955-04-14 | 1955-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-13 | 1959-04-14 | 1959-10-14 | $7700.00 | Window Closed / Lapsed |