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Note 9 - Selling, General and Administrative - Selling, General and Administrative Expenses (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Filing and regulatory fees     $ 28,491 $ 31,249
Marketing     53,694 18,832
Professional fees     47,149 66,844
Rent     18,560 18,932
Office and administration     46,930 69,668
Selling, General and Administrative Expense, Total $ 98,571 $ 122,119 $ 194,824 $ 205,525