Patent US2638526A successfully refreshed from Google Patents.
US2638526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically heated base for cooking
Assignee: West Bend Co
•
Filing: 1950-10-13
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Granted: 1953-05-12
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Expires: 1970-10-13
Abstract
No abstract record available.
Inventors
- 👤 Ralph N Kircher
- 👤 William G Laabs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:22
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/10; F24C15/101
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1044269A
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US1335602A
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US1705727A
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US1758658A
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US2097825A
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US2028033A
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US2117578A
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US2269111A
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US2230488A
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US2339183A
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US2459169A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-11 | 1956-11-10 | 1957-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-11 | 1960-11-10 | 1961-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-11 | 1964-11-10 | 1965-05-12 | $7700.00 | Window Closed / Lapsed |