250 Utility Patents
#3 in Saitama 343-0827
#121 in Japan
#1,276 in the World
Forward Citations = 3,493
Company Filing History:
Kabushiki Kaisha Topcon

Tokyo Kogaku Kikai Kabushiki Kaisha
4. 3 out of 3
Tokyo Kogaku Kikai K. K.
5. 1 out of 832,448 patents
Other
where one patent can have more than one assignee
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