Assignee
GRELL AXEL
DE·2 granted patents·1 pending application·5 citations·filing 2006–2010
Top patents by PatentIndex Score
3 records- 0164US8180092B2Converter system for an active noise compensation apparatusGRELL AXEL·Filed 2006·Granted May 15, 2012·4 cites·2 claims
- 0256US8295530B2Headphones and headsetGRELL AXEL·Filed 2010·Granted Oct 23, 2012·1 cites·9 claims
- 0343US2009103745A1Headset with Active Noise CompensationGRELL AXEL·Filed 2008·Application pending·0 cites
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