Quarterly report pursuant to Section 13 or 15(d)

F. ACCRUED LIABILITIES AND EXPENSES (Details)

v3.20.2
F. ACCRUED LIABILITIES AND EXPENSES (Details) - USD ($)
Sep. 30, 2020
Dec. 31, 2019
Dec. 31, 2018
Accrued liabilities and expenses      
Accrued liabilities and expenses $ 434,473 $ 214,925  
Accrued payroll and payroll taxes 302,973 227,153  
Accrued sales taxes, penalties, and interest 17,508 26,957  
Product warranties 48,222 58,791 $ 46,103
Total accrued liabilities and expenses $ 803,176 $ 527,826