Assignee
HOFFMANN ELEKTROKOHLE
AT·7 granted patents·69 citations·filing 1988–1996
Top patents by PatentIndex Score
7 records- 0160US5114351ASliding contact arrangement for carbon brushesHOFFMANN ELEKTROKOHLE·Filed 1988·Granted May 19, 1992·21 cites·3 claims
- 0242US5193656ACollector shoe for collector and process for producing itHOFFMANN ELEKTROKOHLE·Filed 1992·Granted Mar 16, 1993·11 cites·1 claims
- 0340US5189903ASliding strip for collector with rupture detection deviceHOFFMANN ELEKTROKOHLE·Filed 1989·Granted Mar 2, 1993·7 cites·14 claims
- 0440US5152380ACollector shoe for collector and process for producing itHOFFMANN ELEKTROKOHLE·Filed 1989·Granted Oct 6, 1992·7 cites·4 claims
- 0539US5285126ACollector shoe and method for producing itHOFFMANN ELEKTROKOHLE·Filed 1989·Granted Feb 8, 1994·6 cites·4 claims
- 0632US5244065APantograph slipper for current collectorsHOFFMANN ELEKTROKOHLE·Filed 1990·Granted Sep 14, 1993·8 cites·2 claims
- 0731US5878854ACollector shoe for collector and process for producing itHOFFMANN ELEKTROKOHLE·Filed 1996·Granted Mar 9, 1999·9 cites·12 claims
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