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Note 3 - Inventories
9 Months Ended
Sep. 30, 2013
Inventory Disclosure [Abstract]  
Inventory Disclosure [Text Block]

3. Inventories


Inventories are valued at the lower of cost or market value. Cost is determined using the first-in first-out method (FIFO).


Inventories consist of the following:


   

September 30, 2013

   

December 31, 2012

 

Finished products

  $ 604,601     $ 602,753  

Work-in-process

    744,134       666,830  

Raw materials

    1,918,801       1,402,033  

Net Inventories

  $ 3,267,536     $ 2,671,616