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Note 4 - Prepaid Expenses and Other Current Assets (Tables)
3 Months Ended
Mar. 31, 2022
Notes Tables  
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block]
  

March 31,

  

December 31,

 
  

2022

  

2021

 
         

Prepaid expenses

 $20,824  $28,141 

Tax Receivable – Canadian GST

  3,464   9,691 
  $24,288  $37,832