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NOTE 4 — Inventories (Tables)
3 Months Ended
Mar. 31, 2024
Inventory Disclosure [Abstract]  
Inventories
               
   March 31,  December 31,
   2024  2023
Raw materials and sub-assemblies  $6,058,394   $5,839,176 
Finished goods   315,975    500,814 
Inventory reserves   (960,943)   (930,943)
Inventory, net  $5,413,426  $5,409,047