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INTANGIBLE ASSETS (Schedule of changes in the carrying amount of intangible assets) (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Summary of changes the carrying amount of finite lived intangible assets of Patents and Trademarks    
Beginning balance $ 262,819 $ 284,408
Additions during the period 16,737 46,907
Amortization (48,433) (68,496)
Ending balance $ 231,123 $ 262,819