7 Utility Patents
#228 in Mito
#119,357 in Japan
#574,846 in the World
Forward Citations = 97
Company Filing History:
Hitachi, Ltd.
Shikoku Electric Power Co., Inc.

where one patent can have more than one assignee
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#228 in Mito
#119,357 in Japan
#574,846 in the World
Company Filing History:

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