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Note 4 - Inventory
9 Months Ended
Aug. 31, 2012
Inventory Disclosure [Text Block]
(4) Inventory

Major classes of inventory are:

   
August 31, 2012
   
November 30, 2011
 
Raw materials
  $ 8,473,311     $ 7,623,095  
Work in process
    753,043       394,158  
Finished goods
    7,332,153       7,982,192  
    $ 16,558,507     $ 15,999,445  
Less: Reserves
    (2,842,267 )     (2,750,340 )
    $ 13,716,240     $ 13,249,105