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Note 5 - Patents and Trademarks, Net (Tables)
3 Months Ended
Nov. 30, 2015
Notes Tables  
Schedule of Finite-Lived Intangible Assets [Table Text Block]
    November 30, 2015   August 31, 2015
Patents and trademarks   $ 2,452,622     $ 2,440,022  
Less accumulated amortization     (1,207,562 )     (1,177,803 )
    $ 1,245,060     $ 1,262,219