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Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018
Condensed Consolidated Statements Of Operations
Net sales	$ 6,116	$ 7,203	$ 16,733	$ 24,508
Cost of sales	5,666	6,617	15,600	23,061
Gross profit	450	586	1,133	1,447
Operating expenses:
Research and development	583	535	1,738	2,326
Intellectual property legal fees	979	2,760	3,567	6,359
Selling, general and administrative	1,747	1,745	5,724	5,021
Total operating expenses	3,309	5,040	11,029	13,706
Operating loss	(2,859)	(4,454)	(9,896)	(12,259)
Other expense, net:
Interest expense, net	(245)	(183)	(775)	(463)
Other expense, net	(4)	(7)	(5)	(12)
Total other expense, net	(249)	(190)	(780)	(475)
Loss before provision for income taxes	(3,108)	(4,644)	(10,676)	(12,734)
Provision for income taxes			1
Net loss	$ (3,108)	$ (4,644)	$ (10,677)	$ (12,734)
Net loss per common share:
Basic and diluted	$ (0.02)	$ (0.04)	$ (0.07)	$ (0.13)
Weighted-average common shares outstanding:
Basic and diluted	148,058	115,402	142,624	96,516

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