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Intangible Assets - Schedule of Intangible Assets (Details) - USD ($)
Sep. 30, 2019
Mar. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]    
Patents $ 3,844,092 $ 3,820,374
Trademarks 24,098 22,829
Total, at cost 3,868,190 3,843,203
Accumulated Amortization (3,528,093) (3,253,386)
Total, net $ 340,097 $ 589,817