US2580518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soderberg electrode suspension
Assignee: Siemens SpA
•
Filing: 1949-05-28
•
Granted: 1952-01-01
•
Expires: 1969-05-28
Abstract
No abstract record available.
Inventors
- 👤 Conti Giampietro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:13
CPC Classifications
H; H05; H05B; H05B7/00; H05B7/02; H05B7/10; H05B7/107; Y; Y10; Y10T; Y10T279/00; Y10T279/19; Y10T279/1986
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1442033A
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US1774674A
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US1929854A
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US2073356A
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GB454584A
Cited
US2169563A
Cited
US2297484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |