Inventor
BARKER CHRISTIAN K
US4 patents
Patents
4 patentsUSD725085SMar 24, 2015
Dual push-to-talk radio microphone
JOHNSON CO E F21 citations88
US10469047B2Nov 5, 2019
Automatic volume control for land mobile radio
JOHNSON CO E F1 citations65
US11374546B2Jun 28, 2022
Automatic volume control for land mobile radio
JOHNSON CO E F0 citations54
US9923534B2Mar 20, 2018
Automatic volume control for land mobile radio
JOHNSON CO E F1 citations44