US3022056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion controls for metallurgical heating furnaces
Assignee: Midland Ross Corp
•
Filing: 1957-11-29
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Granted: 1962-02-20
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Expires: 1977-11-29
Abstract
No abstract record available.
Inventors
- 👤 Jr William H Dailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:49
CPC Classifications
F; F27; F27B; F27B9/00; F27B9/30; F27B9/40; C; C21; C21D; C21D11/00; F27D; F27D19/00; F27D2019/0006; F27D2019/0018; F27D2019/0028; F27D2019/0034; F27D2019/004; F27M; F27M2001/00; F27M2001/15; F27M2001/1539; F27M2001/1547; F27M2001/1552
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2296255A
Cited
US2296256A
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US2518996A
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US2620174A
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US2668700A
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US2872173A
Cited
US2668701A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |