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Note 6 - Inventory (Tables)
9 Months Ended
Sep. 30, 2024
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

September 30,

  

December 31,

 
  

2024

  

2023

 
         

Finished goods

 $4,220,416  $4,373,056 

Fabricated assemblies

  54,153   59,184 

Reserve on finished goods

  (3,887,625)  (3,986,500)

Total inventory

 $386,944  $445,740