Note 5 - Product Warranties (Tables)

6 Months Ended

Apr. 30, 2023

Notes Tables

Schedule of Product Warranty Liability [Table Text Block]

	Six Months Ended
	April 30,
	2023			2022
Balance at beginning of period	$	75,000		$	75,000
Liabilities accrued for warranties issued during the period		59,149			80,092
Warranty claims and costs paid during the period		(39,652	)		(33,535	)
Changes in liability for pre-existing warranties during the period		(29,497	)		(56,557	)
Balance at end of period	$	65,000		$	65,000