US1517819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing carbon electrodes and the product thereof
Assignee: Rain Carbon Germany GmbH
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Filing: 1924-04-17
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Granted: 1924-12-02
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Expires: 1944-04-17
Abstract
No abstract record available.
Inventors
- 👤 Beer Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:25
CPC Classifications
C; C25; C25B; C25B11/00; C25B11/04; C25B11/042; C25B11/043
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1927-12-02 | 1928-06-02 | 1928-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-12-02 | 1932-06-02 | 1932-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-12-02 | 1936-06-02 | 1936-12-02 | $7700.00 | Window Closed / Lapsed |