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Note 5 - Intangible Assets (Details Textual) - USD ($)
12 Months Ended
Oct. 31, 2020
Oct. 31, 2019
Oct. 31, 2018
Amortization of Intangible Assets, Total $ 42,006 $ 38,598 $ 34,768
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 40,000    
Finite-Lived Intangible Assets, Gross, Total 693,435 645,701  
Finite-Lived Intangible Assets, Accumulated Amortization 177,399 $ 135,393  
Finite-Lived Intangible Asset, Expected Amortization, Year Two 40,000    
Finite-Lived Intangible Asset, Expected Amortization, Year Three 40,000    
Finite-Lived Intangible Asset, Expected Amortization, Year Four 40,000    
Finite-Lived Intangible Asset, Expected Amortization, Year Five $ 40,000