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US2178312A
Expired / Lapsed
US
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Safety control mechanism for gas or liquid fuel burners
Assignee: Micro Switch Corp
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Filing: 1936-11-21
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Granted: 1939-10-31
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Expires: 1956-11-21
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Riche
- 👤 John R Hathaway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:39
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/10; F23N2239/00; F23N2239/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-10-30 | 1943-05-01 | 1943-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-10-30 | 1947-05-01 | 1947-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-10-30 | 1951-05-01 | 1951-10-31 | $7700.00 | Window Closed / Lapsed |