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Note 3 - Allowance for Credit Losses for Trade Accounts Receivable - Summary of Changes in the Allowance for Doubtful Accounts for Trade Accounts Receivable (Details) - USD ($)
9 Months Ended
Jul. 31, 2024
Jul. 31, 2023
Balance at beginning of period $ 71,189 $ 69,643
Bad debt expense (recovery) (447) 7,767
Balance at end of period $ 70,742 $ 77,410