Patent US2889530A successfully refreshed from Google Patents.
US2889530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring brush for rotating parts
Assignee: ITE Circuit Breaker Co
•
Filing: 1954-01-19
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Granted: 1959-06-02
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Expires: 1974-01-19
Abstract
No abstract record available.
Inventors
- 👤 Straub Hermann
- 👤 Wiedmann Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:18
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/02; H01R39/18; H01R39/20; H01R39/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1300239A
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US1743682A
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US1826478A
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US1594597A
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US2135303A
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US2089678A
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FR858299A
Cited
US2324891A
Cited
US2382799A
Cited
US2520379A
Cited
US2773247A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |