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Note 9 - Inventory (Tables)
6 Months Ended
Jun. 30, 2022
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

June 30,

  

December 31,

 
  

2022

  

2021

 
         

Finished goods

 $4,787,957  $4,798,203 

Fabricated assemblies

  100,644   142,457 

Total inventory

 $4,888,601  $4,940,660