XML 41 R30.htm IDEA: XBRL DOCUMENT v3.25.1
Note 5 - Product Warranties - Changes in Accrual for Product Warranties (Details) - USD ($)
6 Months Ended
Apr. 30, 2025
Apr. 30, 2024
Balance at beginning of period $ 65,000 $ 80,000
Liabilities accrued for warranties issued during the period 64,498 73,342
Warranty claims and costs paid during the period (31,941) (56,842)
Changes in liability for pre-existing warranties during the period (32,557) (21,500)
Balance at end of period $ 65,000 $ 75,000