US2911540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame detection system
Assignee: General Controls Co
•
Filing: 1955-02-14
•
Granted: 1959-11-03
•
Expires: 1975-02-14
Abstract
No abstract record available.
Inventors
- 👤 Forrest M Powers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:06
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/08; F23N5/082; G; G08; G08B; G08B17/00; G08B17/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2084186A
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US2304641A
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US2349715A
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US2667102A
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US2748846A
Cited
US2749447A
Cited
US2692962A
Cited
US2804131A
Cited
US2697824A
Cited
US2771942A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |