US3133218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Holder for extra-long carbon brushes
Assignee: HERMAN R HARRIS
•
Filing: 1961-02-13
•
Granted: 1964-05-12
•
Expires: 1981-02-13
Abstract
No abstract record available.
Inventors
- 👤 Harris Herman Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:09
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/02; H01R39/38; H01R39/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1994502A
Cited
US2629061A
Cited
US2695968A
Cited
US2602100A
Cited
US2769107A
Cited
US2836745A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |