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Katsuya Yoshikawa

Pioneer Electronic: 2 patents #804 of 1,840Top 45%

Overall (All Time): #2,353,690 of 4,157,543Top 60%

2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
D279183	Loudspeaker	—	1985-06-11
D276912	Loudspeaker	—	1984-12-25