US2857445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Consumable electrode arc furnace
Assignee: Titanium Metals Corp
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Filing: 1957-06-17
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Granted: 1958-10-21
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Expires: 1977-06-17
Abstract
No abstract record available.
Inventors
- 👤 Joseph L Mangin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:28
CPC Classifications
F; F27; F27D; F27D11/00; F27D11/08; H; H05; H05B; H05B7/00; H05B7/02; H05B7/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-20 | 1962-04-21 | 1962-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-20 | 1966-04-21 | 1966-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-20 | 1970-04-21 | 1970-10-21 | $7700.00 | Window Closed / Lapsed |