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Patents and Other Intangible Assets (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Patents	$ 1,963,000	$ 2,097,000
Trademarks	78,000	64,000
Other	8,000	8,000
Patents and other intangible assets	2,049,000	2,169,000
Accumulated amortization	(290,000)	(313,000)
Finite-Lived Intangible Assets, Net	1,759,000	1,856,000
Patents Pending [Member]
Patents	1,202,000	1,167,000
Issued Patents [Member]
Patents	761,000	930,000
Trademarks Pending [Member]
Trademarks	55,000	41,000
Registered Trademarks [Member]
Trademarks	$ 23,000	$ 23,000

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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