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BALANCE SHEETS (PARENTHETICAL) (USD $)	Aug. 31, 2011	Feb. 28, 2011
BALANCE SHEETS [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 14,748	$ 12,128
PROPERTY & EQUIPMENT, accumulated depreciation	1,360,342	1,316,822
Patents, accumulated amortization	$ 105,072	$ 102,314
Common Stock, par value per share	$ 0.01	$ 0.01
Common Stock, shares authorized	50,000,000	50,000,000
Common Stock, shares issued	38,602,667	36,577,667
Common Stock, shares outstanding	38,602,667	36,577,667
Treasury Stock, shares	2,275,000	2,275,000

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The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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Face amount or stated value of common stock per share; generally not indicative of the fair market value per share.

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