Patent US2218188A successfully refreshed from Google Patents.
US2218188A
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US
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Pressure cooker
Assignee: NATIONAL PRESSURE COOKER Co
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Filing: 1940-02-08
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Granted: 1940-10-15
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Expires: 1960-02-08
Abstract
No abstract record available.
Inventors
- 👤 Edward H Wittenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:43
CPC Classifications
A; A47; A47J; A47J27/00; A47J27/08; A47J27/0804; A47J27/0806; A47J27/09; A47J27/092
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-10-15 | 1944-04-15 | 1944-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-10-15 | 1948-04-15 | 1948-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-10-15 | 1952-04-15 | 1952-10-15 | $7700.00 | Window Closed / Lapsed |