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Note 4 - Inventories
12 Months Ended
Dec. 31, 2014
Inventory Disclosure [Abstract]  
Inventory Disclosure [Text Block]

Note 4 - Inventories


Inventories consist of:                          


   

2014

   

2013

 
                 

Raw materials

  $ 4,307,913     $ 4,058,350  

Work-in-process

    419,731       300,460  

Finished goods

    114,415       138,539  

Totals

  $ 4,842,059     $ 4,497,349