US2703372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Minimizing brush wear in electrical machines
Assignee: General Electric Co
•
Filing: 1951-03-01
•
Granted: 1955-03-01
•
Expires: 1971-03-01
Abstract
No abstract record available.
Inventors
- 👤 Robert H Savage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:31
CPC Classifications
H; H02; H02K; H02K9/00; H02K9/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US471693A
Cited
US1116871A
Cited
GB226517A
Cited
US1922191A
Cited
US2106842A
Cited
US2393066A
Cited
US2502830A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-28 | 1958-08-30 | 1959-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-28 | 1962-08-30 | 1963-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-28 | 1966-08-30 | 1967-03-01 | $7700.00 | Window Closed / Lapsed |