US2680142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric furnace with horizontally rotating consumable electrode and method and means for replenishing the same
Assignee: Kaiser Aluminum and Chemical Corp
•
Filing: 1951-09-13
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Granted: 1954-06-01
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Expires: 1971-09-13
Abstract
No abstract record available.
Inventors
- 👤 John O Graybeal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:33
CPC Classifications
C; C25; C25C; C25C7/00; C25C7/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1441037A
Cited
US826742A
Cited
US1150021A
Cited
US1169384A
Cited
US1496232A
Cited
US1748780A
Cited
US1944521A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |