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Note 5 - Inventories
3 Months Ended
Mar. 31, 2020
Notes to Financial Statements  
Inventory Disclosure [Text Block]
NOTE
5:
     INVENTORIES
 
Inventories consist of:
               
   
March 31,
2020
   
December 31,
2019
 
                 
Raw materials
  $
1,305,521
    $
1,281,250
 
Work-in-process
   
385,046
     
428,463
 
Inventories
  $
1,690,567
    $
1,709,713