Quarterly report pursuant to Section 13 or 15(d)

A. BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Tables)

v3.19.2
A. BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Tables)
6 Months Ended
Jun. 30, 2019
Accounting Policies [Abstract]  
Product warranties
  June 30,
2019
  December 31,
2018
 
Beginning balance $ 46,103   $ 59,892  
Warranty claims incurred   (37,658 )   (28,000 )
Provision charged to expense   24,058     14,211  
Ending balance $ 32,503   $ 46,103