Osaka Shiritsu Kogyo Shikenjo (File #168)

Toyama-Ken Kogyo Shikenjo (File #295)

Fukuoka-Ken Kogyo Shikenjo (File #53)

Fukuoka-Ken Kinzoku Kogyo Shikenjo (File #52)

Taihei Kogyo K.K., Osaka Refinery (File #275)

Kokuritsu Eisei Shikenjo (File #115)

Kokuritsu Engei Shikenjo (File #120)

Kokuritsu Nogyo Shikenjo (File #121)

Nagoya Eisei Shikenjo (File #150)

Niigata Eisei Shikenjo (File #204)

Taihei Kogyo K.K., Kogyo Kenkyujo (File #273)

Seika Kogyo K.K. (Sumitomo Kogyo) (File #215)

Kawaminami Kogyo (File #102)

Nippon Kogyo (File #177)

Katakura Kogyo (File #101)

Riken Kogyo (File #171)

Nitto Kogyo (File #226)

Osaka Yakin Kogyo K.K

Gifu-Ken Kinzoku Shikenjo (File #59)

Tokyo-To Eisei Shikenjo (File #298)

Gifu-Ken Toki Shikenjo (File #60)

Azabu Kogyo K.K. (File #29)

Kamioka Kogyo K.K. (File #92)

Kanto Denki Kogyo (File #96)

Tohoku Kinzoku Kogyo (File #256)