Inventor
OOKAWA KAZUMI
JP3 patents
Patents
3 patentsUS5792080AAug 11, 1998
Massaging apparatus having self-adjusting constant strength and non-adjust strength modes
MATSUSHITA ELECTRIC WORKS LTD230 citations96
US5993401ANov 30, 1999
Relax inducing device with heartbeat detection unit
MATSUSHITA ELECTRIC WORKS LTD93 citations94
US6030347AFeb 29, 2000
Biological-signal detecting device
MATSUSHITA ELECTRIC WORKS LTD24 citations89