Patent US3588796A successfully refreshed from Google Patents.
Patent US2493412A successfully refreshed from Google Patents.
US2493412A
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US
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Burner safety and scavenging control
Assignee: Honeywell Inc
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Filing: 1945-08-11
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Granted: 1950-01-03
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Expires: 1965-08-11
Abstract
No abstract record available.
Inventors
- 👤 Frederick E Lange
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:31
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/20; F23N5/02; F23N5/08; F23N5/082; F23N2227/00; F23N2227/06; F23N2233/00; F23N2233/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1732174A
Cited
US2243071A
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US2304207A
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US2299501A
Cited
US2368893A
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US2379871A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-02 | 1953-07-04 | 1954-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-02 | 1957-07-04 | 1958-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-02 | 1961-07-04 | 1962-01-03 | $7700.00 | Window Closed / Lapsed |