US3439103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode assembly for electric slag melting
Assignee: Gebrueder Boehler and Co AG
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Filing: 1967-10-18
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Granted: 1969-04-15
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Expires: 1987-10-18
Abstract
No abstract record available.
Inventors
- 👤 Wolfgang Holzgruber
- 👤 Othmar Kleinhagauer
- 👤 Fritz Schwanter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:14
CPC Classifications
H; H05; H05B; H05B7/00; H05B7/02; H05B7/06; H05B7/07; H05B3/00; H05B3/60; H05B7/10; H05B7/109
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) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |