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Note 5 - Product Warranties - Changes in Accrual for Product Warranties (Details) - USD ($)
6 Months Ended
Apr. 30, 2024
Apr. 30, 2023
Balance at beginning of period $ 80,000 $ 75,000
Liabilities accrued for warranties issued during the period 65,766 59,149
Warranty claims and costs paid during the period (49,266) (39,652)
Changes in liability for pre-existing warranties during the period (21,500) (29,497)
Balance at end of period $ 75,000 $ 65,000