Quarterly report pursuant to Section 13 or 15(d)

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

v3.8.0.1
A. BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Tables)
3 Months Ended
Mar. 31, 2018
Accounting Policies [Abstract]  
Product warranties
    March 31,
2018
    December 31,
2017
 
Beginning balance   $ 59,892     $ 95,540  
Warranty claims incurred     (6,023 )     (84,087 )
Provision charged to expense     1,447       48,439  
Ending balance   $ 55,316     $ 59,892