Note 6 - Product Warranty (Tables)

3 Months Ended

Feb. 29, 2016

Notes Tables

Schedule of Product Warranty Liability [Table Text Block]

	For the three months ended
	February 29, 2016			February 28, 2015
Balance, beginning	$	179,531		$	234,266
Settlements / adjustments		(81,292	)		(91,525	)
Warranties issued		80,739			103,749
Balance, ending	$	178,978		$	246,490