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Inventories
9 Months Ended
Sep. 30, 2019
Inventory Disclosure [Abstract]  
Inventories
8)       
Inventories
 
Inventories consist of the following:
                 
 
September 30,
 
2019
   
December 31,
 
2018
 
Raw materials
  $
291,613
    $
235,593
 
Work-in-process
   
84,814
     
61,908
 
Finished goods
   
86,836
     
87,188
 
                 
  $
463,263
    $
384,689