4 Utility Patents
#407 in Musashino
#193,296 in Japan
Forward Citations = 7
Company Filing History:
Japanese National Railways
Hakusan Seisakusho Co., Ltd.
Hakusan Seissaku-sho Co., Ltd.
4. 1 out of 1
Kyushu Tetsudo Kiki Seizo Co., Ltd.
where one patent can have more than one assignee
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