249 Utility Patents
#3 in Saitama 343-0827
#119 in Japan
#1,207 in the World
Forward Citations = 3,399
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 830,757 patents
Other
where one patent can have more than one assignee
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