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Patents and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2020

Patents and Other Intangible Assets

Schedule of Patents and other intangible assets

Patents and other intangible assets are summarized as follows:

		December 31,
		2020			2019
		(Unaudited)
Patents
Patents pending		$	731,000		$	846,000
Issued patents			883,000			619,000
			1,614,000			1,465,000
Trademarks
Trademarks pending			105,000			77,000
Registered trademarks			23,000			23,000
			128,000			100,000
Other			8,000			8,000
			1,750,000			1,573,000
Accumulated amortization			(448,000)			(288,000)
		$	1,302,000		$	1,285,000

Schedule of future amortization expense

Future amortization expense associated with awarded patents and registered trademarks as of December 31, 2020 is estimated as follows:

2021			152,000
2022			125,000
2023			91,000
2024			64,000
Thereafter			26,000
		$	458,000

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