US3483300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric arc furnaces
Assignee: United Steel Companies Ltd
•
Filing: 1968-05-24
•
Granted: 1969-12-09
•
Expires: 1988-05-24
Abstract
No abstract record available.
Inventors
- 👤 Lawrence Mcgee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:06
CPC Classifications
H; H05; H05B; H05B7/00; H05B7/02; H05B7/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2332944A
Cited
US2368998A
Cited
US2494775A
Cited
US2752409A
Cited
US3433878A
Cited
US3431344A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-08 | 1973-06-09 | 1973-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-08 | 1977-06-09 | 1977-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-08 | 1981-06-09 | 1981-12-09 | $7700.00 | Window Closed / Lapsed |