Accrued Liabilities

12 Months Ended

Dec. 31, 2019

Accrued Liabilities [Abstract]

Accrued Liabilities

8. Accrued Liabilities

At December 31, 2019 and December 31, 2018, accrued liabilities consisted of the following:

	2019		2018
Accrued wages and benefits	$	47,029	$	52,753
Accrued expenses relating to vendors and others		125,996		128,114
Accrued warranty costs		20,000		20,000
Accrued interest payable relating to stockholder notes		303,735		329,801
Deferred rent		—		74,689
	$	496,760	$	605,357