Quarterly report pursuant to Section 13 or 15(d)

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

v3.10.0.1
A. BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Tables)
9 Months Ended
Sep. 30, 2018
Accounting Policies [Abstract]  
Product warranties
    September 30,
2018
    December 31,
2017
 
Beginning balance   $ 59,892     $ 95,540  
Warranty claims incurred     (25,082 )     (84,087 )
Provision charged to expense     13,157       48,439  
Ending balance   $ 47,967     $ 59,892