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ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES
6 Months Ended
Jun. 30, 2021
Payables and Accruals [Abstract]  
ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES

NOTE 6 — ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES

 

Accrued expenses and other current liabilities consisted of the following at June 30, 2021 and December 31, 2020:

 

   June 30, 2021   December 31, 2020 
Board compensation  $50,776   $15,091 
Vacation   290,587    230,457 
Royalties   1,078    491 
Research and development   744,640    237,504 
Professional fees   271,377    58,261 
Warranty costs   47,854    24,871 
Payroll   176,275    4,566 
Patent and license fees       7,204 
Franchise, sales and use taxes   21,130    30,353 
Income taxes   2,261    3,326 
Other   317,730    134,614 
Accrued expenses and other current liabilities  $1,923,708   $746,738