Certificates of Patents

utility model patent (4)

utility model patent (4)

utility model patent (9)

utility model patent (9)

utility model patent (10)

utility model patent (10)

utility model patent (11)

utility model patent (11)

utility model patent (12)

utility model patent (12)

utility model patent Electronic Voting Unit

utility model patent Electronic Voting Unit

utility model patent Wireless Voting System

utility model patent Wireless Voting System

utility model patent

utility model patent

appearance patent (1)

appearance patent (1)