Balance Sheets - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Current assets
Cash	$ 1,428,900	$ 688,000
Accounts receivable less $5,000 allowance for doubtful accounts	1,023,000	1,352,300
Inventory	286,600	127,900
Prepaid and other	21,200	135,000
Total current assets	2,759,700	2,303,200
Fixed assets
Leasehold improvements	27,800	24,200
Furniture, fixtures and equipment	163,700	252,500
Fixed assets, gross	191,500	276,700
Less: accumulated depreciation and amortization	98,100	206,600
Total fixed assets	93,400	70,100
Other assets
Long-term receivables	671,100	957,000
Operating lease right of use - building	171,000	202,000
Other assets	842,100	1,159,000
Total assets	3,695,200	3,532,300
Current liabilities
Convertible debentures		97,900
Accounts payable	58,300	44,300
Accrued expenses	165,500	231,600
Income taxes	22,200	52,400
Operating lease liability - current	43,800	41,700
Total current liabilities	289,800	467,900
Other liabilities
Accrued expenses, non-current	47,000	67,000
Deferred income taxes		47,400
Operating lease liability - non-current	127,200	160,300
Total other liabilities	174,200	274,700
Stockholders' equity
Common stock, $0.01 par value Authorized - 75,000,000 shares, Issued and outstanding - 2020 - 67,353,690 shares; 2019 - 61,044,698 shares	673,500	610,400
Paid-in capital	12,575,800	12,483,900
Accumulated deficit	(10,018,100)	(10,304,600)
Total stockholders' equity	3,231,200	2,789,700
Total liabilities and stockholders' equity	$ 3,695,200	$ 3,532,300