Patent US2634718A successfully refreshed from Google Patents.
US2634718A
Expired / Lapsed
US
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Gas oven ventilation
Assignee: Chambers Corp
•
Filing: 1945-09-17
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Granted: 1953-04-14
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Expires: 1965-09-17
Abstract
No abstract record available.
Inventors
- 👤 Willis E Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:19
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/20; F24C15/2042; F24C15/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1176093A
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US1461999A
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US1969565A
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US2081640A
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US2182106A
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US2222436A
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US2221647A
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US2337301A
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US2375466A
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US2398508A
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US2482952A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-13 | 1956-10-13 | 1957-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-13 | 1960-10-13 | 1961-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-13 | 1964-10-13 | 1965-04-14 | $7700.00 | Window Closed / Lapsed |