13 Utility Patents
#131 in Tokorozawa
#63,483 in Japan
#297,277 in the World
Forward Citations = 253
Company Filing History:



4. 1 out of 19
Yagi Antenna Co., Ltd.
5. 1 out of 31
Hitachi Heating Appliances Co., Ltd.
where one patent can have more than one assignee
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