Note 9 - Product Warranty (Tables)

12 Months Ended

Nov. 30, 2017

Notes Tables

Schedule of Product Warranty Liability [Table Text Block]

	For the twelve months ended
	November 30, 201 7			November 30, 201 6
Balance, beginnin g	$	134,373		$	176,531
Settlements / adjustment s		(276,667	)		(246,235	)
Warranties issue d		210,745			204,077
Balance, endin g	$	68,451		$	134,373