US3393264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric arc furnaces
Assignee: Lectromelt Corp
•
Filing: 1964-06-15
•
Granted: 1968-07-16
•
Expires: 1984-06-15
Abstract
No abstract record available.
Inventors
- 👤 Peter J Wynne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:57
CPC Classifications
F; F27; F27D; F27D11/00; F27D11/08; H; H05; H05B; H05B7/00; H05B7/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US309540A
Cited
US1827852A
Cited
US2922023A
Cited
US3152372A
Cited
US3213495A
Cited
US3249673A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |