US2518804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety control system for gaseous fuel burners
Assignee: Milwaukee Gas Specialty Co
•
Filing: 1947-09-17
•
Granted: 1950-08-15
•
Expires: 1967-09-17
Abstract
No abstract record available.
Inventors
- 👤 Philip R Marvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:14
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/14; F23N5/143
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1858265A
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US2130175A
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US2137199A
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US2304641A
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US2295885A
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US2351277A
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US2327690A
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US2373326A
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US2430373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |