Inventor

SEKIZAWA MASAAKI

JP2 patents

Patents

2 patents

US5129467AJul 14, 1992

Electric hammer drill having dust collecting device

HITACHI KOKI KK126 citations96

US4401167AAug 30, 1983

Vibratory tool with a vibration proof mechanism for the handle thereof

HITACHI KOKI KK106 citations93