Inventor

OU-YANG GUO-LING

CN2 patents

Patents

2 patents

US7958364B2Jun 7, 2011

System and method for digitally signing electronic documents

HONGFUJIN PREC IND SHENZHEN6 citations57

US8010796B2Aug 30, 2011

System and method for digitally signing an electronic document

HONGFUJIN PREC IND SHENZHEN1 citations47