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Product Warranties
 3 Months Ended
Jan. 31, 2014
Product Warranties Disclosures [Abstract]  
Product Warranties
Product Warranties
As of January 31, 2014 and October 31, 2013, the Company’s accrual for estimated product warranty claims totaled $160,000 and $190,000, respectively, and is included in accounts payable and accrued expenses. Warranty claims expense for the three months ended January 31, 2014 totaled $20,539. Warranty claims recovery for the three months ended January 31, 2013 totaled $9,656.
 
The following table summarizes the changes in the Company’s accrual for product warranties during the three months ended January 31, 2014 and 2013:
 
 
Three Months Ended
January 31,
 
 
2014
 
2013
Balance at beginning of period
 
$
190,000

 
$
250,000

Liabilities accrued for warranties issued during the period
 
104,777

 
139,834

Warranty claims and costs paid during the period
 
(50,539
)
 
(30,344
)
Changes in liability for pre-existing warranties during the period
 
(84,238
)
 
(149,490
)
Balance at end of period
 
$
160,000

 
$
210,000