Assignee
MARTIKAINEN ILPO
FI·3 granted patents·9 citations·filing 2006–2009
Technology mixH04R3
Top patents by PatentIndex Score
3 records- 0169US8150085B2Reflex loudspeaker structureMARTIKAINEN ILPO·Filed 2006·Granted Apr 3, 2012·5 cites·11 claims
- 0258US9020178B2Drive unit mounting arrangement and loudspeakerMARTIKAINEN ILPO·Filed 2009·Granted Apr 28, 2015·3 cites·25 claims
- 0356US8452032B2Nested compound loudspeaker drive unitMARTIKAINEN ILPO·Filed 2008·Granted May 28, 2013·1 cites·29 claims
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