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Note 6 - Furniture and Equipment (Tables)
12 Months Ended
Dec. 31, 2022
Notes Tables  
Property, Plant and Equipment [Table Text Block]
  

2022

  

2021

 
         

Machinery and equipment

 $75,137  $67,151 

Office furniture

  81,590   74,490 
   156,727   141,641 

Less: accumulated depreciation

  101,539   82,058 
         

Furniture and equipment, net

 $55,188  $59,583