US3474274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brush holder
Assignee: Electrolux AB
•
Filing: 1967-02-23
•
Granted: 1969-10-21
•
Expires: 1987-02-23
Abstract
No abstract record available.
Inventors
- 👤 Herbert Gerhard Groschopp
- 👤 Per Tage Borje Hillbom
- 👤 Bengt Erik Nilsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:07
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/02; H01R39/38; H01R39/41; H02; H02K; H02K5/00; H02K5/04; H02K5/14; H02K5/143
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2537714A
Cited
US2947895A
Cited
US3177388A
Cited
US3313966A
Cited
US3176177A
Cited
US3290524A
Cited
US3329844A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |