Patent US3716729A successfully refreshed from Google Patents.
US2987639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor brush assembly
Assignee: General Electric Co
•
Filing: 1959-03-11
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Granted: 1961-06-06
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Expires: 1979-03-11
Abstract
No abstract record available.
Inventors
- 👤 Frank K Bayless
- 👤 Daniel H Brennan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:11
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/14; H02K5/143; H02K5/148
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1405596A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |