Annual report pursuant to Section 13 and 15(d)

PATENTS AND TRADEMARKS (Tables)

v3.21.1
PATENTS AND TRADEMARKS (Tables)
12 Months Ended
Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]  
Patents and trademarks


 

 

2020

 

 

2019

 

Patents and trademarks

 

$

301,770

 

 

$

293,585

 

Less: Accumulated amortization

 

 

(237,355

)

 

 

(231,987

)

 

 

$

64,415

 

 

$

61,598