GRDH Patents list: 1 https://www.google.com/patents/USD681768?dq=inassignee:%22Guardian+8+Corporation%22&hl=en&sa=X&ved=0ahUKEwi_4eSu5ZLTAhVItRoKHaapDeUQ6AEIGzAA 2 https://www.google.com/patents/US8310360?dq=inassignee:%22Guardian+8+Corporation%22&hl=en&sa=X&ved=0ahUKEwi_4eSu5ZLTAhVItRoKHaapDeUQ6AEIIjAB 3 https://www.google.com/patents/US8988229?dq=inassignee:%22Guardian+8+Corporation%22&hl=en&sa=X&ved=0ahUKEwi_4eSu5ZLTAhVItRoKHaapDeUQ6AEIKTAC 4 https://www.google.com/patents/WO2014138592A1?cl=en&dq=inassignee:%22Guardian+8+Corporation%22&hl=en&sa=X&ved=0ahUKEwi_4eSu5ZLTAhVItRoKHaapDeUQ6AEIMDAD