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Income Taxes - Income tax reconciliation (Details) - USD ($)	12 Months Ended
	Feb. 29, 2020	Feb. 28, 2019
Income tax (benefit) reconciliation:
Expected federal income tax	$ 254,898	$ 38,101
State tax, net of federal	19,758	11,430
Research and development tax credits	(213,521)	(19,588)
Permanent timing difference	29,632	2,272
Change in valuation allowances	15,238	(36,425)
Other adjustments		24,057
Income tax expense (benefit)	$ 106,005	$ 19,847

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