US2832929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame safety amplifier
Assignee: General Controls Co
•
Filing: 1953-06-15
•
Granted: 1958-04-29
•
Expires: 1973-06-15
Abstract
No abstract record available.
Inventors
- 👤 Frederick E Cairns
- 👤 Robert L Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:10
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/12; F23N5/123; F23N2229/00; F23N2229/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1774944A
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US2067143A
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US2059057A
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US2243071A
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US2431158A
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US2386648A
Cited
US2360532A
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US2640920A
Cited
US2684115A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-28 | 1961-10-28 | 1962-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-28 | 1965-10-28 | 1966-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-28 | 1969-10-28 | 1970-04-29 | $7700.00 | Window Closed / Lapsed |