Inventor

YOSIDA SIZUO

3 patents

Patents

3 patents

US4249227AFeb 3, 1981

Enclosed switchboard having instruments needed for regular inspection and operation mounted on a middle level door

TOKYO SHIBAURA ELECTRIC CO63 citations94

US4236189ANov 25, 1980

Enclosed switchboard

TOKYO SHIBAURA ELECTRIC CO30 citations88

US4146915AMar 27, 1979

Shutter mechanism for an enclosed electrical switchboard

TOKYO SHIBAURA ELECTRIC CO23 citations78