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PATENTS AND TRADEMARKS (Tables) | 12 Months Ended
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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 |

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