Patent US2549633A successfully refreshed from Google Patents.
US2549633A
Expired / Lapsed
US
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Gas burner ignition and safety control system
Assignee: Metals and Controls Corp
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Filing: 1945-12-22
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Granted: 1951-04-17
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Expires: 1965-12-22
Abstract
No abstract record available.
Inventors
- 👤 Ottmar Jerome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:44
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-16 | 1954-10-16 | 1955-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-16 | 1958-10-16 | 1959-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-16 | 1962-10-16 | 1963-04-17 | $7700.00 | Window Closed / Lapsed |