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Note 6 - Inventory (Tables)
9 Months Ended
Sep. 30, 2023
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

September 30,

  

December 31,

 
  

2023

  

2022

 
         

Finished goods

 $4,619,487  $4,764,643 

Fabricated assemblies

  69,726   69,726 

Reserve on finished goods

  (400,000)  (400,000)

Total inventory

 $4,289,213  $4,434,369