Note 6 - Product Warranty (Tables)

9 Months Ended

Aug. 31, 2015

Notes Tables

Schedule of Product Warranty Liability [Table Text Block]

	For the three months ended
	August 31, 2015			August 31, 2014
Balance, beginning	$	283,571		$	229,400
Settlements / adjustments		(70,327	)		(70,683	)
Warranties issued		65,025			126,379
Balance, ending	$	278,269		$	285,096

	For the nine months ended
	August 31, 2015			August 31, 2014
Balance, beginning	$	234,266		$	220,719
Settlements / adjustments		(240,463	)		(265,753	)
Warranties issued		284,466			330,130
Balance, ending	$	278,269		$	285,096