US880579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon electrode for electrical bleaching apparatus.
Assignee: Individual
•
Filing: 1906-11-26
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Granted: 1908-03-03
•
Expires: 1926-11-26
Abstract
No abstract record available.
Inventors
- 👤 Paul Schoop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:35
CPC Classifications
C; C25; C25C; C25C7/00; C25C7/02
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) | 1911-03-03 | 1911-09-02 | 1912-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1915-03-03 | 1915-09-02 | 1916-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1919-03-03 | 1919-09-02 | 1920-03-03 | $7700.00 | Window Closed / Lapsed |