Patent US3062523A successfully refreshed from Google Patents.
US3062523A
Expired / Lapsed
US
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System for degassing steel
Assignee: Dortmund Hoerder Huettenunion AG
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Filing: 1959-08-26
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Granted: 1962-11-06
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Expires: 1979-08-26
Abstract
No abstract record available.
Inventors
- 👤 Knuppel Helmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:13
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1990370A
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US1949391A
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US2202180A
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US2512643A
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US2678714A
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US2788270A
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US2848317A
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US2948417A
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US2895820A
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US2893860A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-05 | 1966-05-07 | 1966-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-05 | 1970-05-07 | 1970-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-05 | 1974-05-07 | 1974-11-06 | $7700.00 | Window Closed / Lapsed |