Assignee
HELFRICH KENNETH JAY
US·3 granted patents·80 citations·filing 2008–2012
Top patents by PatentIndex Score
3 records- 0193US8064613B1Electret microphone detection using a current sourceHELFRICH KENNETH JAY·Filed 2008·Granted Nov 22, 2011·42 cites·14 claims
- 0290US8290171B1Headset with microphone and wired remote controlHELFRICH KENNETH JAY·Filed 2009·Granted Oct 16, 2012·38 cites·5 claims
- 0347US9485580B1Headset with microphone and wired remote controlHELFRICH KENNETH JAY·Filed 2012·Granted Nov 1, 2016·0 cites·9 claims
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