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Note 3 - Property and Equipment - Property and Equipment (Details) - USD ($)
Jun. 30, 2018
Jun. 30, 2017
Machinery and equipment $ 2,222,670 $ 2,222,670
Buildings and structures 401,470 401,470
Computers and office equipment 171,613 171,613
Total 2,795,753 2,795,753
Less accumulated depreciation (2,794,305) (2,792,561)
Net $ 1,448 $ 3,192