Condensed Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2014	Mar. 31, 2014
Condensed Balance Sheets
Accounts receivable, allowance for doubtful accounts (in dollars)	$ 8,000	$ 8,000
Inventories, reserve for obsolescence (in dollars)	190,000	560,000
Patents, accumulated amortization (in dollars)	$ 229,827	$ 215,969
Preferred stock, par value	$ 0	$ 0
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock and additional paid-in capital, par value	$ 0	$ 0
Common stock and additional paid-in capital, shares authorized	100,000,000	100,000,000
Common stock and additional paid-in capital, shares issued	10,673,225	10,673,225