Inventor
HIGASHI RYOZI
4 patents
Patents
4 patentsUS4328465AMay 4, 1982
Tone control circuit utilizing variable gain amplifier
PIONEER ELECTRONIC CORP13 citations72
US4289928ASep 15, 1981
Tone control arrangement for use in sound reproducing instruments
PIONEER ELECTRONIC CORP7 citations71
US4284965AAug 18, 1981
Tone control device
PIONEER ELECTRONIC CORP10 citations71
US4271398AJun 2, 1981
Tone control device
PIONEER ELECTRONIC CORP4 citations60