Patent US2730560A successfully refreshed from Google Patents.
US2730560A
Expired / Lapsed
US
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Tapping control system for melting furnaces
Assignee: Babcock and Wilcox Co
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Filing: 1952-08-28
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Granted: 1956-01-10
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Expires: 1972-08-28
Abstract
No abstract record available.
Inventors
- 👤 William T Hage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:33
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/27; G05D23/1906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1248444A
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US1338881A
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US1683856A
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US1928288A
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US1968576A
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US2133235A
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US2186718A
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US2244267A
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US2215982A
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US2229489A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |