US2456147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Burner control system
Assignee: General Controls Co
•
Filing: 1944-12-05
•
Granted: 1948-12-14
•
Expires: 1964-12-05
Abstract
No abstract record available.
Inventors
- 👤 William A Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:08
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/20; F23N5/02; F23N5/10; F23N5/105; Y; Y10; Y10T; Y10T137/00; Y10T137/1407; Y10T137/1516
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1855551A
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US2077297A
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US2261092A
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US2296025A
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US2305242A
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US2305243A
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US2294694A
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US2269157A
Cited
US2300156A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-14 | 1952-06-14 | 1952-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-14 | 1956-06-14 | 1956-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-14 | 1960-06-14 | 1960-12-14 | $7700.00 | Window Closed / Lapsed |