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Inventories
9 Months Ended
Sep. 30, 2019
Inventory Disclosure [Abstract]  
Inventories

NOTE 4. INVENTORIES

 

Inventories consisted of the following at September 30, 2019 and December 31, 2018:

 

    September 30, 2019     December 31, 2018  
Raw material and component parts   $ 4,220,724     $ 4,969,786  
Work-in-process     334,967       351,451  
Finished goods     5,161,430       4,965,594  
                 
Subtotal     9,717,121       10,286,831  
Reserve for excess and obsolete inventory     (3,335,408 )     (3,287,771 )
                 
Total   $ 6,381,713     $ 6,990,060  

 

Finished goods inventory includes units held by potential customers and sales agents for test and evaluation purposes. The cost of such units totaled $162,202 and $115,456 as of September 30, 2019 and December 31, 2018, respectively.