US2637390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic ignition and control mechanism for oven burners
Assignee: TAPPAN STOVE Co
•
Filing: 1951-12-10
•
Granted: 1953-05-05
•
Expires: 1971-12-10
Abstract
No abstract record available.
Inventors
- 👤 Richard L Perl
- 👤 John M Hoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:54
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/10; F23N5/105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2483191A
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US2303672A
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US2353042A
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US2478386A
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US2562536A
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US2577787A
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US2578717A
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US2578718A
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US2584147A
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US2564869A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |