Showa Seiki

K.K. Showa Seiki Seizosho

412.31 (Inventory Sheets) Kobe Kosakusho - Kobe Kojo, Showa Seiki Kogyo K.K. - Honsha Kojo

412.31; (Inventory Sheets) Mitsubishi Denki K.K. Himeji Plant, 400.170; (Reconversion & Exemption) Showa Seiki Kogyo K.K

Imaizumi Seiki

Chichibu Seiki

Fujikoshi Seiki

Hitachi Seiki

SHOWA KURABU

Showa Denko

Showa Shobo

Toa Seiki Kosakusho

Teijin Seiki K.K

Hitachi Seiki, Adachi

Mitsui Seiki K.K

Hikari Seiki Seisakusho

Pilot Seiki K.K

Haneda Seiki K.K

Haneda Seiki K.K

Nihon Seiki K.K

Showa Shinzan: Yoganto

Showa Denko - Chiba

Showa (Syowa) Base

Showa Aircraft Co

Showa Aircraft K.K