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6. ACCOUNTS PAYABLE AND ACCRUED LIABILITIES (Tables)
12 Months Ended
Dec. 31, 2019
Payables and Accruals [Abstract]  
Summary of accrued liabilities
    December 31,  
    2019     2018  
Patent costs   $ 6,851     $ 11,600  
Accrued compensation     144,193       55,493  
Warranty costs     13,923       428  
Taxes and other     29,327       932  
    $ 194,294     $ 68,453