Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Details Textual)

v3.20.1
Summary of Significant Accounting Policies (Details Textual)
12 Months Ended
Dec. 31, 2019
USD ($)
Segment
Dec. 31, 2018
USD ($)
Segment
Summary of Significant Accounting Policies (Textual)    
Shipping and handling costs $ 33,151 $ 20,380
Warranty liability 26,933 24,190
Warranty expense 4,650 7,403
Research and development costs 31,057 258,294
Advertising costs $ 36,238 $ 51,719
Number of operating segments | Segment 1 1