US2619595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame detection apparatus
Assignee: Honeywell Inc
•
Filing: 1947-10-24
•
Granted: 1952-11-25
•
Expires: 1967-10-24
Abstract
No abstract record available.
Inventors
- 👤 Robert W Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:08
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/12; F23N5/123; F23N5/08; F23N5/082
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2127977A
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US2112736A
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US2136256A
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US2352143A
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US2299501A
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US2422574A
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US2379871A
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US2455351A
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US2413020A
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US2476496A
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US2478373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-25 | 1956-05-26 | 1956-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-25 | 1960-05-26 | 1960-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-25 | 1964-05-26 | 1964-11-25 | $7700.00 | Window Closed / Lapsed |