US2931999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple collector ring assembly
Assignee: General Electric Co
•
Filing: 1953-08-04
•
Granted: 1960-04-05
•
Expires: 1973-08-04
Abstract
No abstract record available.
Inventors
- 👤 Harold H P Lemmerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:03
CPC Classifications
H; H01; H01R; H01R39/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49105; Y10T29/49117; Y10T29/49204; Y10T29/49208; Y10T29/49222
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2262409A
Cited
GB599058A
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GB566985A
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US2436949A
Cited
US2473526A
Cited
US2471808A
Cited
GB607438A
Cited
US2509931A
Cited
US2557074A
Cited
US2677777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |