Patent US2842354A successfully refreshed from Google Patents.
US2842354A
Expired / Lapsed
US
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Smelting furnace system
Assignee: Stockey & Schmitz
•
Filing: 1955-10-19
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Granted: 1958-07-08
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Expires: 1975-10-19
Abstract
No abstract record available.
Inventors
- 👤 Hohne Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:50
CPC Classifications
C; C21; C21C; C21C1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1119540A
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US1198434A
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GB176805A
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US1865491A
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DE534575C
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US2343336A
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US2209153A
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US2400362A
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US2494501A
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US2565959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |