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)
Azabu Kogyo K.K. (File #29)
Kamioka Kogyo K.K. (File #92)
Kanto Denki Kogyo (File #96)
Tohoku Kinzoku Kogyo (File #256)
Aichi Kagaku Kogyo (File #23)
Kosaka Dowa Kogyo (File #124)
Kyoto Kogyo Kenkyujo (File #130)
Riken Noson Kogyo (File #172)
Nippon Carbide Kogyo (File #201)
Santoku Kogyo K.K. (File #216)
Shinko Kinzoku Kogyo (File #240)
Hamamatsu Kogyo Daigaku (File #65)
Yokozawa Kagaku Kogyo (File #279)
Awamura Kogyo K.K. (File #31)
Kanto Kagaku Kogyo (File #97)
Nankai Kagaku Kogyo (File #207)
Tokyo Kogyo Daigaku (File #249)
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Uploaded: 2020-12-17