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Note 5 - Property, Plant and Improvements, Net (Tables)
12 Months Ended
Dec. 31, 2020
Notes Tables  
Property, Plant and Equipment [Table Text Block]
   
2020
   
2019
 
Leasehold improvements
  $
-
    $
166,163
 
Furniture and equipment
   
-
     
17,668
 
Accumulated depreciation
   
-
     
(35,706
)
                 
Net property, plant and improvements
  $
-
    $
148,125