Quarterly report pursuant to Section 13 or 15(d)

A. SUMMARY OF ACCOUNTING POLICIES (Tables)

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A. SUMMARY OF ACCOUNTING POLICIES (Tables)
6 Months Ended
Jun. 30, 2013
Accounting Policies [Abstract]  
Product warranties

Product warranties for the six months ended June 30, 2013 and the year ended December 31, 2012 are as follows:

 

    June 30, 2013     December 31, 2012  
Beginning balance   $ 69,743     $ 104,423  
Warranty claims incurred     (4,429 )     (66,278 )
Provision charged to expense     12,129       31,598  
Ending balance   $ 77,443     $ 69,743