Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details 2)

v3.20.1
Summary of Significant Accounting Policies (Details 2) - USD ($)
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Accounting Policies [Abstract]    
Balance at beginning of year $ 26,933 $ 24,190
Increase in estimated warranty liability 1,631
Warranty expenses incurred (100) (50)
Balance at end of year $ 26,833 $ 25,771