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Note 7 - Promissory Notes (Tables)
9 Months Ended
Sep. 30, 2019
Notes Tables  
Schedule of Long-term Debt Instruments [Table Text Block]
   
September 30, 2019
   
December 31, 2018
 
Opening balance
  $
-
    $
502,313
 
                 
Reduction of capital on extinguishment of promissory notes with related parties
   
-
     
65,955
 
Extinguishment of promissory notes to related parties
   
-
     
(605,358
)
Accrued interest
   
-
     
5,124
 
Interest accretion
   
-
     
31,966
 
                 
Closing balance
  $
-
    $
-