Note L - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	2020			2019
Allowance for Doubtful Accounts	$	2,000		$	2,000
Warranty Reserve		5,000			5,000
Impaired Assets		-			-
Inventory Reserve		110,000			178,000
Deferred Officer's Compensation		816,000			820,000
Depreciation and Amortization		(67,000	)		(103,000	)
Net Operating Loss Carryforwards		17,993,000			16,504,000
Tax Credits		416,000			384,000
Other		10,000			(28,000	)
Subtotal		19,285,000			17,762,000
Valuation allowance		(19,285,000	)		(17,762,000	)
Non-current deferred tax asset		-			-

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	2020			2019
Statutory rate		21	%		21	%
State income tax-all states		1			4
Warrant Revaluation		-			(11	)
NOL Expiration		(11	)		(22	)
Other		8			(3	)
Subtotal		19	%		-11	%
Valuation allowance		-19	%		11	%
Effective tax rate		-			-