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)
3 Months Ended
Mar. 31, 2014
Accounting Policies [Abstract]  
Product warranties
    March 31,
2014
    December 31, 2013  
Beginning balance   $ 77,943     $ 69,743  
Warranty claims incurred     (4,711 )     (9,106 )
Provision charged to expense     1,711       17,306  
Ending balance   $ 74,943     $ 77,943