Note 5 - Product Warranties (Tables)

6 Months Ended

Apr. 30, 2014

Product Warranties Disclosures [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

	Six Months Ended April 30,
	2014			2013
Balance at beginning of period	$	190,000		$	250,000
Liabilities accrued for warranties issued during the period		212,255			241,455
Warranty claims and costs paid during the period		(134,535	)		(131,640	)
Changes in liability for pre-existing warranties during the period		(102,720	)		(159,815	)
Balance at end of period	$	165,000		$	200,000