Note 8 - Product Warranty (Tables)

12 Months Ended

Nov. 30, 2020

Notes Tables

Schedule of Product Warranty Liability [Table Text Block]

	For the Twelve Months Ended
	November 30, 2020			November 30, 2019
Balance, beginning	$	203,185		$	96,786
Settlements / adjustments		(157,501	)		(279,992	)
Warranties issued		245,770			386,391
Balance, ending	$	291,454		$	203,185