Statements of Operations (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenues
Licenses, royalties and fees	$ 185,500	$ 164,600
Product and other sales	425,900	355,700
Total revenues	611,400	520,300
Cost of revenues
Licenses, royalties and fees	47,100	49,700
Product and other sales	173,200	201,600
Total cost of revenues	220,300	251,300
Gross profit	391,100	269,000
Operating expenses
Research and development	44,500	41,100
Sales and marketing	83,200	84,000
General and administrative	145,500	139,700
Total operating expenses	273,200	264,800
Net income from operations	117,900	4,200
Other income (expenses)
Interest income	4,800	3,800
Interest expense and bank charges	(600)	(2,500)
Total other income (expenses)	4,200	1,300
Net income before income taxes	122,100	5,500
Income taxes	7,300	(47,100)
Net income	$ 114,800	$ 52,600
Basic and diluted net income per common share	$ .00	$ .00
Weighted average common shares outstanding
Basic	67,353,690	61,044,698
Diluted	67,477,603	61,530,910