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CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($)
 3 Months Ended 9 Months Ended
Nov. 30, 2023
Nov. 30, 2022
Nov. 30, 2023
Nov. 30, 2022
Income Statement [Abstract]        
Net Sales $ 5,690,022 $ 3,586,165 $ 14,932,157 $ 11,401,029
Cost of Goods Sold 2,764,013 1,761,797 7,428,348 5,574,035
Gross Profit 2,926,009 1,824,368 7,503,809 5,826,994
Operating Expenses        
Research and product development costs 776,013 520,187 2,221,712 1,543,310
Marketing and selling expenses 955,017 792,710 2,700,327 2,359,430
General and administrative costs 474,457 407,990 1,387,006 1,262,670
Total Operating Expenses 2,205,487 1,720,887 6,309,045 5,165,410
Operating Income 720,522 103,481 1,194,764 661,584
Interest and Dividend Income 149,666 38,803 379,949 64,725
Net unrealized gain/(loss) on marketable securities 20,176 (9,231) 31,031 (40,256)
Income Before Income Taxes 890,364 133,053 1,605,744 686,053
Income Tax Expense 200,195 28,155 320,896 113,396
Net Income $ 690,169 $ 104,898 $ 1,284,848 $ 572,657
Basic Earnings Per Share $ 0.04 $ 0.01 $ 0.08 $ 0.04
Diluted Earnings Per Share $ 0.04 $ 0.01 $ 0.08 $ 0.04
Weighted Average Shares - Basic 15,744,543 15,738,180 15,743,224 15,733,284
Weighted Average Shares - Diluted 15,776,972 15,773,370 15,775,675 15,764,351