Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details Textual)

v3.19.1
Summary of Significant Accounting Policies (Details Textual)
3 Months Ended
Mar. 31, 2019
USD ($)
Segment
Mar. 31, 2018
USD ($)
Segment
Summary of Significant Accounting Policies (Textual)    
Shipping and handling costs $ 8,299 $ 3,085
Warranty liability 25,771 24,190
Warranty expense 1,631 1,483
Research and development costs 8,102 17,260
Advertising costs $ 16,413 $ 2,930
Number of operating segments | Segment 1 1