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Inventories
9 Months Ended
Sep. 30, 2017
Inventory Disclosure [Abstract]  
Inventories

NOTE 3 — Inventories

 

Inventories consist principally of raw materials and sub-assemblies, which are stated at the lower of cost (first-in, first-out) or market. Inventories at September 30, 2017 and December 31, 2016 were as follows:

 

   September 30,  December 31,
   2017  2016
Raw materials and sub-assemblies  $3,279,490   $2,665,185 
Finished goods   151,655    64,359 
Inventory reserves   (1,184,856)   (1,192,105)
Inventories, net  $2,246,289  $1,537,439