Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Details Textual)

v3.22.1
Summary of Significant Accounting Policies (Details Textual)
12 Months Ended
Dec. 31, 2020
USD ($)
Segment
Dec. 31, 2019
USD ($)
Segment
Summary of Significant Accounting Policies (Textual)    
Shipping and handling costs $ 49,515 $ 33,151
Warranty liability 26,833 26,933
Warranty expense 0 4,650
Research and development costs 16,627 31,057
Advertising costs $ 46,276 $ 36,238
Number of operating segments | Segment 1 1