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Note 5 - Patents and Trademarks, Net (Tables)
9 Months Ended
May 31, 2016
Notes Tables  
Schedule of Finite-Lived Intangible Assets [Table Text Block]
    May 31, 2016   August 31, 2015
Patents and trademarks   $ 2,531,858     $ 2,440,022  
Less accumulated amortization     (1,267,078 )     (1,177,803 )
    $ 1,264,780     $ 1,262,219