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Note 5 - Inventories (Details) - Inventories (USD $)
Dec. 31, 2013
Dec. 31, 2012
Inventories [Abstract]    
Finished products $ 373,281 $ 602,753
Work-in-process 817,456 666,830
Raw materials 1,548,076 1,402,033
Net Inventories $ 2,738,813 $ 2,671,616