Patent US2704701A successfully refreshed from Google Patents.
Patent US2670035A successfully refreshed from Google Patents.
US2670035A
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Safety control system for gas burners employing single point ignition
Assignee: Individual
•
Filing: 1947-01-17
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Granted: 1954-02-23
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Expires: 1967-01-17
Abstract
No abstract record available.
Inventors
- 👤 Robert A Wittmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:37
CPC Classifications
F; F24; F24C; F24C3/00; F24C3/10; F24C3/106; F23; F23N; F23N1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |