Patent US2470010A successfully refreshed from Google Patents.
US2470010A
Expired / Lapsed
US
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Melting iron in electric furnaces
Assignee: Individual
•
Filing: 1946-06-17
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Granted: 1949-05-10
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Expires: 1966-06-17
Abstract
No abstract record available.
Inventors
- 👤 Sidney D Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:56
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/52; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US935686A
Cited
US975751A
Cited
US1290143A
Cited
US1477135A
Cited
GB141956A
Cited
US1526400A
Cited
US2146872A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-09 | 1952-11-08 | 1953-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-09 | 1956-11-08 | 1957-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-09 | 1960-11-08 | 1961-05-10 | $7700.00 | Window Closed / Lapsed |