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Finite-life Intangible Assets (Details Narrative) - USD ($)
9 Months Ended
Mar. 31, 2021
Jun. 30, 2020
Accumulated amortization $ 1,216,000 $ 1,119,000
Patents [Member]    
Estimated useful life 15 years  
Trademarks [Member]    
Estimated useful life 12 years