Patent US3525852A successfully refreshed from Google Patents.
US3525852A
Expired / Lapsed
US
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Bi-level cooking platform
Assignee: Westinghouse Electric Corp
•
Filing: 1968-05-22
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Granted: 1970-08-25
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Expires: 1988-05-22
Abstract
No abstract record available.
Inventors
- 👤 Edmund H Filipak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:38
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/10; F24C15/102
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US446063A
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US3122987A
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US2551219A
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US2526476A
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US2584187A
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US2702848A
Cited
US2798930A
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US3218955A
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US3261279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-24 | 1974-02-23 | 1974-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-24 | 1978-02-23 | 1978-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-24 | 1982-02-23 | 1982-08-25 | $7700.00 | Window Closed / Lapsed |