Patent US3663379A successfully refreshed from Google Patents.
Patent US3530278A successfully refreshed from Google Patents.
US3530278A
Expired / Lapsed
US
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Air inlet arrangement for heat-cleaning oven
Assignee: Westinghouse Electric Corp
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Filing: 1968-02-28
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Granted: 1970-09-22
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Expires: 1988-02-28
Abstract
No abstract record available.
Inventors
- 👤 Carl W Tilus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:11
CPC Classifications
F; F24; F24C; F24C14/00; F24C14/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB513684A
Cited
GB533223A
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US2511328A
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US3053963A
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US3027444A
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US3081763A
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US3215816A
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US3221729A
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US3348023A
Cited
US3363088A
Cited
US3333531A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-21 | 1974-03-23 | 1974-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-21 | 1978-03-23 | 1978-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-21 | 1982-03-23 | 1982-09-22 | $7700.00 | Window Closed / Lapsed |