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NOTE 4 — Inventories
3 Months Ended
Mar. 31, 2023
Inventory Disclosure [Abstract]  
NOTE 4 — Inventories

NOTE 4 — 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 on March 31, 2023 and December 31, 2022 were as follows:

   March 31,  December 31,
   2023  2022
Raw materials and sub-assemblies   $6,346,897   $6,193,453 
Finished goods    193,976    289,181 
Inventory reserves    (880,943)   (880,943)
Inventory, net   $5,659,930   $5,601,691