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Note 5 - Inventories (Tables)
9 Months Ended
Jun. 30, 2015
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
 
 
June 30,
 
 
September 30,
 
 
 
2015
 
 
2014
 
Raw materials
  $ 4,546,351     $ 3,462,869  
Finished goods
    723,370       634,246  
Work in process
    204,549       153,107  
Inventories, gross
    5,474,270       4,250,222  
Reserve for obsolescence
    (396,772 )     (354,486 )
Inventories, net
  $ 5,077,498     $ 3,895,736