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Note 8 - Selling, General and Administrative - Selling, General and Administrative Expenses (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Filing and regulatory fees     $ 26,731  
Marketing     31,374  
Professional fees     102,870  
Rent     29,857  
Office and administration     128,300  
Selling, General and Administrative Expense, Total $ 113,607 $ 83,605 $ 319,132 $ 204,447