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US2860811A
Expired / Lapsed
US
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Pressure cooker safety device
Assignee: Individual
•
Filing: 1957-03-21
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Granted: 1958-11-18
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Expires: 1977-03-21
Abstract
No abstract record available.
Inventors
- 👤 Harold A Hessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:05
CPC Classifications
A; A47; A47J; A47J27/00; A47J27/08; A47J27/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1662343A
Cited
US2538583A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |