Accrued Liabilities (Tables)

3 Months Ended

Mar. 31, 2021

Accrued liabilities were comprised of the following:

	March 31,		December 31,
	2021		2020
	(Unaudited)
Accrued compensation and related taxes	$	473,600	$	486,400
Accrued interest		1,310,900		1,170,500
Accrued settlement/litigation claims		150,000		150,000
Warranty and defect claims		35,700		34,000
Other		127,200		136,300
Total Accrued Liabilities	$	2,097,400	$	1,977,200