Inventor: Yoshida, Yoshio, Tsuchiya, Shichiro
Inventor: Yoshida, Yoshio, Tsuchiya, Shichiro
Inventor: Yoshida, Yoshio, Tsuchiya, Shichiro
Inventor: Ishizawa, Kunihiko
Inventor: Murakami, Tsuneo
Inventor: Hatakoshi, Kunio
Inventor: Hiraragi, Tadao
Inventor: Yoshida, Yoshio, Haniuda, Tadayuki