3 Utility Patents
#3,386 in Shizuoka
#236,990 in Japan
Forward Citations = 24
Company Filing History:
Kabushiki Kaisha Showa Seisakusho
Showa Manufacturing Co., Ltd.

where one patent can have more than one assignee
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#3,386 in Shizuoka
#236,990 in Japan
Company Filing History:

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