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Patents and Other Intangible Assets - Summary (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Patents	$ 1,533,000	$ 1,465,000
Trademarks	110,000	100,000
Other	8,000	8,000
Patents and other intangible assets	1,651,000	1,573,000
Accumulated amortization	(325,000)	(288,000)
Finite-Lived Intangible Assets, Net	1,326,000	1,285,000
Patents Pending [Member]
Patents	857,000	846,000
Issued Patents [Member]
Patents	676,000	619,000
Trademarks Pending [Member]
Trademarks	87,000	77,000
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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-Name Accounting Standards Codification
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