Note 5 - Product Warranties (Tables)

9 Months Ended

Jul. 31, 2014

Product Warranties Disclosures [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

	Nine Months Ended
	July 31,
	2014			2013
Balance at beginning of period	$	190,000		$	250,000
Liabilities accrued for warranties issued during the period		299,477			319,638
Warranty claims and costs paid during the period		(250,965	)		(211,725	)
Changes in liability for pre-existing warranties during the period		(103,512	)		(157,913	)
Balance at end of period	$	135,000		$	200,000