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Note A - The Company and Summary of Significant Accounting Policies - Summary of Accounts Receivable (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Accounts receivable - current	$ 139,785	$ 1,587,817
Accounts receivable - non current	1,720,000	1,720,000
Accounts Receivable, before Allowance for Credit Loss	1,859,785	3,307,817
Allowance for doubtful accounts - current	(13,785)	(13,785)
Allowance for doubtful accounts - non current	(1,720,000)	(1,720,000)
Accounts Receivable, Allowance for Credit Loss, Ending Balance	(1,733,785)	(1,733,785)
Accounts receivable, net of allowances for doubtful accounts	$ 126,000	$ 1,574,032

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