5 Utility Patents
#289 in Funabashi
#162,524 in Japan
#826,892 in the World
Forward Citations = 45
Company Filing History:
Kabushiki Kaisha Toukai Spring Seisakusho

Filtration Systems, Inc.
4. 1 out of 1
Nagase & Co., Ltd. and Kabushiki Kaisha Toukai Spring Seisakusho
where one patent can have more than one assignee
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