Note 8 - Product Warranty (Tables)

12 Months Ended

Nov. 30, 2012

Schedule of Product Warranty Liability [Table Text Block]

	November 30, 2012			November 30, 2011
Balance, beginning	$	201,630		$	180,549
Settlements made in cash or in-kind		(436,096	)		(481,539	)
Warranties issued		813,330			502,620
Balance, ending	$	578,864		$	201,630