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NOTE 4 — Inventories (Tables)
6 Months Ended
Jun. 30, 2024
Inventory Disclosure [Abstract]  
Inventories
               
  June 30,  December 31,
   2024  2023
Raw materials and sub-assemblies   $5,850,099   $5,839,176 
Finished goods    296,874    500,814 
Inventory reserves    (960,943)   (930,943)
Inventory, net   $5,186,030  $5,409,047