Note 9 - Product Warranty (Tables)

12 Months Ended

Nov. 30, 2016

Notes Tables

Schedule of Product Warranty Liability [Table Text Block]

	For the twelve months ended
	November 30, 2016			November 30, 2015
Balance, beginning	$	176,531		$	230,766
Settlements / adjustments		(246,235	)		(319,691	)
Warranties issued		204,077			265,456
Balance, ending	$	134,373		$	176,531