Inventor
SUGAHARA TSUGUTAKA
JP3 patents
Patents
3 patentsUS5756220AMay 26, 1998
Object to be checked for authenticity and a method for manufacturing the same
NHK SPRING CO LTD73 citations94
US5601931AFeb 11, 1997
Object to be checked for authenticity and a method for manufacturing the same
NHK SPRING CO LTD68 citations94
US5442433AAug 15, 1995
Identification system for an article having individually attached patches
NHK SPRING CO LTD56 citations94