Patent US2472612A successfully refreshed from Google Patents.
US2472612A
Expired / Lapsed
US
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Electric furnace
Assignee: Revere Copper and Brass Inc
•
Filing: 1944-05-20
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Granted: 1949-06-07
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Expires: 1964-05-20
Abstract
No abstract record available.
Inventors
- 👤 Frank F Poland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:30
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/60; F; F27; F27D; F27D11/00; F27D11/02; H05B3/62; H05B3/64; Y; Y10; Y10S; Y10S266/00; Y10S266/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1533224A
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US1742286A
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US1674947A
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US1641764A
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US1825011A
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US1857103A
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US2061250A
Cited
US2134785A
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US2351490A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-06 | 1952-12-06 | 1953-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-06 | 1956-12-06 | 1957-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-06 | 1960-12-06 | 1961-06-07 | $7700.00 | Window Closed / Lapsed |