Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Operating Activities
Net income (loss)	$ (2,033,600)	$ 109,400
Adjustments to reconcile net income (loss) to net cash provided by operating activities
Depreciation and amortization	21,700	18,200
Stock-based compensation	1,823,900
Interest income accrued	(92,300)
(Increase) decrease in assets
Accounts receivable	22,300	(242,100)
Inventory	128,700	118,300
Prepaid and other	17,000	(4,600)
Long-term receivables	220,900	338,500
Increase (decrease) in liabilities
Accounts payable and accrued expenses	146,100	(61,600)
Taxes on income		(138,800)
Net cash provided by operating activities	254,700	137,300
Investing Activities
Additions to fixed assets	(8,700)	(11,900)
Sale of short-term investment	2,162,600
Net cash provided by (used in) investing activities	2,153,900	(11,900)
Increase in cash and cash equivalents	2,408,600	125,400
Cash and Cash Equivalents
Beginning of year	2,269,200	5,337,800
End of period	$ 4,677,800	$ 5,463,200