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Consolidated Statements of Operations - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Consolidated Statements of Operations
Sales	$ 363,000	$ 0
Cost of goods sold including warranty adjustment (see note 5)	225,000	0
Gross profit	138,000	0
Operating expenses:
Research and development	826,000	810,000
General and administrative	1,333,000	1,153,000
Total operating expenses	2,159,000	1,963,000
Net loss	$ (2,021,000)	$ (1,963,000)
Net loss per share - basic and fully diluted	$ (0.07)	$ (0.07)
Weighted average number of shares outstanding - basic and fully diluted	30,526,571	26,707,288

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