US2771942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for detecting an ignition arc and controlling a burner
Assignee: Individual
•
Filing: 1954-02-24
•
Granted: 1956-11-27
•
Expires: 1974-02-24
Abstract
No abstract record available.
Inventors
- 👤 William F Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:08
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/08; F23N5/082
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2208386A
Cited
US2228997A
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US2405807A
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US2398008A
Cited
US2469664A
Cited
US2506192A
Cited
US2692962A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |