Statements of Cash Flows (unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Operating Activities
Net income	$ 158,400	$ 286,500
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	21,600	15,300
Deferred income taxes		(47,400)
Other assets	314,500	316,900
Other liabilities	(52,800)	(51,000)
Net income adjusted for non-cash operating activities	441,700	520,300
(Increase) decrease in assets
Accounts receivable	612,400	329,300
Inventory	(155,600)	(158,700)
Prepaid and other	(32,900)	113,800
Decrease in liabilities
Accounts payable and accrued expenses	(26,700)	(6,000)
Income taxes	(36,300)	(30,200)
Total increase in operating capital	360,900	248,200
Net cash provided by operating activities	802,600	768,500
Investing Activities
Additions to fixed assets	(31,600)	(38,600)
Net cash used in investing activities	(31,600)	(38,600)
Financing Activities
Exercise of warrants	2,800	11,000
Net cash provided by financing activities	2,800	11,000
Increase in cash	773,800	740,900
Cash at beginning of year	1,362,800	688,000
Cash at end of period	2,136,600	1,428,900
Supplemental Disclosure of Non-Cash Investing and Financing Activities
Accumulated depreciation and amortization	600	123,800
Furniture, fixtures and equipment	(600)	(123,800)
Convertible debentures		97,900
Accrued expenses		46,100
Common stock		(57,600)
Paid-in capital		$ (86,400)