Note 6 - Product Warranty (Tables)

6 Months Ended

May 31, 2013

Product Warranty Disclosure [Text Block]

Schedule of Product Warranty Liability [Table Text Block]

	For the three months ended
	May 31, 2013			May 31, 2012
Balance, beginning	$	575,330		$	184,137
Settlements made in cash or in-kind		(212,374	)		(33,695	)
Warranties issued		164,025			127,523
Balance, ending	$	526,981		$	277,965

	For the six months ended
	May 31, 2013			May 31, 2012
Balance, beginning	$	578,864		$	201,630
Settlements made in cash or in-kind		(381,063	)		(176,719	)
Warranties issued		329,180			253,054
Balance, ending	$	526,981		$	277,965