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US3510345A
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Apparatus and method for automatically controlling the molten metal bath level in a metallurgical process
Assignee: General Electric Co
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Filing: 1967-11-01
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Granted: 1970-05-05
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Expires: 1987-11-01
Abstract
No abstract record available.
Inventors
- 👤 Peter R Marchant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:33
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/34; C23C2/36; C23C2/38; G; G05; G05D; G05D9/00; G05D9/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US867659A
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US2593197A
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US2664852A
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US2988099A
Cited
US3104678A
Cited
US3060053A
Cited
US3200971A
Cited
US3384150A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-04 | 1973-11-03 | 1974-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-04 | 1977-11-03 | 1978-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-04 | 1981-11-03 | 1982-05-05 | $7700.00 | Window Closed / Lapsed |