Patent US2806333A successfully refreshed from Google Patents.
US2806333A
Expired / Lapsed
US
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Tool for cleaning and burnishing commutators
Assignee: Individual
•
Filing: 1956-04-23
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Granted: 1957-09-17
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Expires: 1976-04-23
Abstract
No abstract record available.
Inventors
- 👤 Head James Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:20
CPC Classifications
H; H01; H01R; H01R43/00; H01R43/14; B; B24; B24D; B24D15/00; B24D15/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1763561A
Cited
US2602766A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |