US3495018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arc voltage control for consumable electrode furnaces
Assignee: Allegheny Ludlum Steel Corp
•
Filing: 1968-04-19
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Granted: 1970-02-10
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Expires: 1988-04-19
Abstract
No abstract record available.
Inventors
- 👤 Harold S Jackson
- 👤 James B Murtland Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:05
CPC Classifications
H; H05; H05B; H05B7/00; H05B7/02; H05B7/144; H05B7/148; H05B7/152; H05B7/005; Y; Y02; Y02P; Y02P10/00; Y02P10/25
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2541764A
Cited
US3019275A
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US3188376A
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US3186510A
Cited
US3187159A
Cited
US3354254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |