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Patent US2768480A successfully refreshed from Google Patents.
US2768480A
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Dynamo brush machine
Assignee: Motors Liquidation Co
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Filing: 1952-04-15
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Granted: 1956-10-30
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Expires: 1972-04-15
Abstract
No abstract record available.
Inventors
- 👤 Richard M Goodwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:11
CPC Classifications
B; B24; B24B; B24B7/00; B24B7/10; B24B7/16; B24B7/162; H; H01; H01R; H01R43/00; H01R43/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1332248A
Cited
US1034362A
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US1611135A
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US1749329A
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US1923931A
Cited
US2352551A
Cited
US2377982A
Cited
US2418770A
Cited
US2624981A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-30 | 1960-04-30 | 1960-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-30 | 1964-04-30 | 1964-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-30 | 1968-04-30 | 1968-10-30 | $7700.00 | Window Closed / Lapsed |