Patent US2456134A successfully refreshed from Google Patents.
US2456134A
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Pressure cooker cover structure
Assignee: Ekco Products Co
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Filing: 1947-10-01
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Granted: 1948-12-14
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Expires: 1967-10-01
Abstract
No abstract record available.
Inventors
- 👤 Walter C Lueneburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:15
CPC Classifications
A; A47; A47J; A47J27/00; A47J27/08; A47J27/09; F; F16; F16K; F16K15/00; F16K15/02; F16K15/04; F16K15/042; F16K15/044; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1632; Y10T137/1774; Y10T137/5109; Y10T137/5283; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7842; Y10T137/7904; Y10T137/7922; Y10T137/7927; Y10T137/8593; Y10T137/85954
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) | 1951-12-14 | 1952-06-14 | 1952-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-14 | 1956-06-14 | 1956-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-14 | 1960-06-14 | 1960-12-14 | $7700.00 | Window Closed / Lapsed |