US1202818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal-carbon brush.
Assignee: Westinghouse Electric Corp
•
Filing: 1913-12-26
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Granted: 1916-10-31
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Expires: 1933-12-26
Abstract
No abstract record available.
Inventors
- 👤 Henry R Edgecomb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:02
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/002; Y; Y10; Y10T; Y10T29/00; Y10T29/14; Y10T29/147; Y10T428/00; Y10T428/12; Y10T428/12424
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) | 1919-10-31 | 1920-05-01 | 1920-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1923-10-31 | 1924-05-01 | 1924-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1927-10-31 | 1928-05-01 | 1928-10-31 | $7700.00 | Window Closed / Lapsed |