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6. Income Taxes (Details - Deferred Income Taxes) - USD ($)
Jun. 30, 2019
Jun. 30, 2018
Deferred tax asset:    
Net operating losses $ 1,767,365 $ 1,417,549
State tax 169 169
Intangibles 22,678 44,200
Tax credits 666,380 589,206
Inventory reserve 165,160 76,663
Other, net 44,853 48,687
Total deferred tax assets 2,666,605 2,176,474
Deferred tax liabilities:    
Fixed asset (25,100) (17,123)
Total deferred tax liabilities (25,100) (17,123)
Less valuation allowance (358,530) (305,922)
Net deferred tax asset $ 2,282,975 $ 1,853,429