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Details of Certain Financial Statement Components (Tables)

12 Months Ended

Dec. 31, 2020

Details of Certain Financial Statement Components

Schedule of inventories

		December 31,			December 31,
		2020			2019
Inventories		(in thousands)
Raw materials		$	520		$	540
Work-in-process			246			253
Finished goods			100			134
Total inventories		$	866		$	927

Schedule of property, plant and equipment, net

		December 31,			December 31,
		2020			2019
Property, plant and equipment, net		(in thousands)
Furniture, machinery and equipment		$	1,662		$	1,626
Leasehold improvements			538			527
			2,200			2,153
Less: accumulated depreciation			(1,793)			(1,520)
Total property, plant and equipment, net		$	407		$	633

Schedule of intangible assets, net

		December 31,			December 31,
		2020			2019
Intangible assets, net		(in thousands)
Patents and trademarks		$	658		$	573
Less: accumulated amortization			(463)			(402)
Total intangibles, net		$	195		$	171

Schedule of future amortization on existing intangibles

Years ending December 31,		(in thousands)
2021		$	65
2022			54
2023			42
2024			27
2025			7
Thereafter			—
		$	195

Schedule of accrued liabilities

		December 31,			December 31,
		2020			2019
Accrued liabilities		(in thousands, except par value)
Accrued warranty		$	7		$	9
Accrued wages and benefits			180			168
Accrued taxes, other than income taxes			—			3
Accrued vacation			110			83
Accrued other			46			39
Total accrued liabilities		$	343		$	302

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