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Patents and Trademarks (Narrative) (Details) - USD ($)
9 Months Ended
Dec. 31, 2016
Mar. 31, 2016
Patents [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross $ 1,145,890 $ 1,166,374
Finite-Lived Intangible Assets, Accumulated Amortization 932,564 916,960
Finite-Lived Intangible Assets, Net $ 213,326 249,414
Finite-Lived Intangible Asset, Useful Life 8 years  
Trademarks [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite-Lived Intangible Assets, Gross $ 175,841 175,841
Finite-Lived Intangible Assets, Accumulated Amortization 80,885 77,514
Finite-Lived Intangible Assets, Net $ 94,955 $ 98,327
Finite-Lived Intangible Asset, Useful Life 40 years