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Note C - Inventories (Tables)
12 Months Ended
Dec. 31, 2019
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
    December 31,
    2019   2018
Raw materials   $
320,507
    $
467,842
 
Work in process    
81,002
     
30,057
 
Finished products    
815,768
     
984,252
 
Total Inventories
  $
1,217,277
    $
1,482,151