US2957716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Butt joint on carbon electrodes for electric furnaces
Assignee: Siemens Plania Werke AG
•
Filing: 1958-04-02
•
Granted: 1960-10-25
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Expires: 1978-04-02
Abstract
No abstract record available.
Inventors
- 👤 Kaufmann Waldemar
- 👤 Ragoss Alfred
- 👤 Fitzer Erich
- 👤 Gress Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:01
CPC Classifications
H; H05; H05B; H05B7/00; H05B7/02; H05B7/14; F; F16; F16B; F16B33/00; F16B33/02; F16B7/00; F16B7/18; F16B7/182; Y; Y02; Y02P; Y02P10/00; Y02P10/25; Y10; Y10S; Y10S403/00; Y10S403/05; Y10T; Y10T403/00; Y10T403/55; Y10T403/556
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1368087A
Cited
US1743888A
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US1943879A
Cited
US2399526A
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US2510230A
Cited
US2735705A
Cited
US2810117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |