Patent US2454579A successfully refreshed from Google Patents.
US2454579A
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Carbon brush element
Assignee: General Electric Co
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Filing: 1946-08-17
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Granted: 1948-11-23
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Expires: 1966-08-17
Abstract
No abstract record available.
Inventors
- 👤 Lynn H Stauffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:56
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/02; H01R39/36; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49119
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1438554A
Cited
US1929142A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-23 | 1952-05-24 | 1952-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-23 | 1956-05-24 | 1956-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-23 | 1960-05-24 | 1960-11-23 | $7700.00 | Window Closed / Lapsed |