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PRODUCT WARRANTIES (Tables)
9 Months Ended
Sep. 30, 2016
Product Warranties Disclosures [Abstract]  
Schedule of changes in product warranty liability

Changes in product warranty liability were as follows for the nine-month period ended September 30, 2016 (unaudited).

 

Balance, beginning of period   $ 48,363  
Warranties accrued during the period     97,990  
Payments on warranty claims     (30,652 )
Balance, end of period     115,701