US1147422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arc-light electrode.
Assignee: National Carbon Co Inc
•
Filing: 1912-11-19
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Granted: 1915-07-20
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Expires: 1932-11-19
Abstract
No abstract record available.
Inventors
- 👤 William Roy Mott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:07
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/485; H01B; H01B1/00; H01B1/20; H01B1/24; Y; Y02; Y02E; Y02E60/00; Y02E60/10
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) | 1918-07-19 | 1919-01-18 | 1919-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1922-07-19 | 1923-01-18 | 1923-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1926-07-19 | 1927-01-18 | 1927-07-20 | $7700.00 | Window Closed / Lapsed |