US2525882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric ladle furnace
Assignee: Loftus Engineering Corp
•
Filing: 1949-05-14
•
Granted: 1950-10-17
•
Expires: 1969-05-14
Abstract
No abstract record available.
Inventors
- 👤 Vernon H Ferguson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:56
CPC Classifications
F; F27; F27B; F27B14/00; F27B14/06; F27B14/08; F27B14/14; F27B14/143; F27D; F27D99/00; F27D99/0001; F27D99/0006; F27D2099/0008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2407882A
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US2473095A
Cited
US2445457A
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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) | 1953-10-16 | 1954-04-17 | 1954-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-16 | 1958-04-17 | 1958-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-16 | 1962-04-17 | 1962-10-17 | $7700.00 | Window Closed / Lapsed |