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BALANCE SHEETS (Parenthetical) - USD ($)
Sep. 30, 2022
Dec. 31, 2021
BALANCE SHEETS    
Allowance for doubtful accounts (in dollars) $ 15,000 $ 15,000
Common stock, par value (in dollars per share) $ 0 $ 0
Common stock, shares authorized 15,000,000 15,000,000
Common stock, shares issued 4,517,319 4,466,969
Common stock, shares outstanding 4,517,319 4,466,969