US2821642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brush holders for dynamo electric machines
Assignee: ZF International UK Ltd
•
Filing: 1956-06-18
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Granted: 1958-01-28
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Expires: 1976-06-18
Abstract
No abstract record available.
Inventors
- 👤 Tooke George Sydney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:37
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/02; H01R39/38; H02; H02K; H02K5/00; H02K5/04; H02K5/14; H02K5/143; H02K5/146
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-27 | 1961-07-29 | 1962-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-27 | 1965-07-29 | 1966-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-27 | 1969-07-29 | 1970-01-28 | $7700.00 | Window Closed / Lapsed |