5 Utility Patents
#8,372 in Yokohama
#161,815 in Japan
#819,042 in the World
Forward Citations = 10
Company Filing History:
Nhk Spring Co., Ltd.

where one patent can have more than one assignee
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#8,372 in Yokohama
#161,815 in Japan
#819,042 in the World
Company Filing History:

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