Note 6 - Product Warranty (Tables)

6 Months Ended

May. 31, 2015

Notes Tables

Schedule of Product Warranty Liability [Table Text Block]

	For the three months ended
	May 31, 2015			May 31, 2014
Balance, beginning	$	246,490		$	153,455
Settlements / adjustments		(78,611	)		(43,493	)
Warranties issued		115,692			119,438
Balance, ending	$	283,571		$	229,400

	For the six months ended
	May 31, 2015			May 31, 2014
Balance, beginning	$	234,266		$	220,719
Settlements / adjustments		(170,136	)		(195,070	)
Warranties issued		219,441			203,751
Balance, ending	$	283,571		$	229,400