Osaka
Japan
4
2022-10-20
The entities that hold a legal rights for patent applications filed by inventor Doi Masayuki:
Masayuki Doi from Osaka, JP has applied for patents for these inventions. The list has both pending applications and granted patents:
HYDRO CHUCK
#2 | 2020-02-06Chuck device
#3 | 2013-05-02Volume adjusting circuit and volume adjusting method
#4 | 2012-05-03Pop sound reduction circuit and audio circuit having such pop reduction circuit for use in audio amplifier
218848 ⎘