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Patents and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2019

Patents and Other Intangible Assets

Schedule of Patents and other intangible assets

Patents and other intangible assets are summarized as follows:

		December 31,
		2019			2018
Patents
Patents pending		$	846,000		$	1,202,000
Issued patents			619,000			761,000
			1,465,000			1,963,000
Trademarks
Trademarks pending			77,000			55,000
Registered trademarks			23,000			23,000
			100,000			78,000
Other			8,000			8,000
			1,573,000			2,049,000
Accumulated amortization			(288,000)			(290,000)
		$	1,285,000		$	1,759,000

Schedule of future amortization expense

Future amortization expense associated with awarded patents and registered trademarks as of December 31, 2019 is estimated as follows:

2020			131,000
2021			100,000
2022			69,000
2023			41,000
2024			13,000
		$	354,000

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