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NAKAYAMA KEN
JP
3 patents
Top patents
by PatentIndex Score
US8794701B2
Aug 5, 2014
Backrest for chair
NAKAYAMA KEN
30 citations
88
US8114534B2
Feb 14, 2012
Fuel cell system
NAKAYAMA KEN
4 citations
60
US8607817B2
Dec 17, 2013
Control method and device of filled water volume in fluid space
NAKAYAMA KEN
0 citations
47