Quarterly report pursuant to Section 13 or 15(d)

Consolidated Statements of Operations (Unaudited)

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Consolidated Statements of Operations (Unaudited) (USD $)
3 Months Ended
Jul. 31, 2013
Jul. 31, 2012
Income Statement [Abstract]    
Revenues $ 7,366,730 $ 7,998,485
Costs and expenses:    
Cost of sales 5,805,044 6,304,447
Engineering 319,327 206,108
Selling, general and administrative 2,039,733 2,354,217
Total costs and expenses 8,164,104 8,864,772
Loss from operations (797,374) (866,287)
Other income (expense):    
Interest expense, net (84,417) (71,382)
Currency gain (loss) 161 (38,048)
Total other expense, net (84,256) (109,430)
Loss before income tax expense (881,630) (975,717)
Income tax expense      
Net loss $ (881,630) $ (975,717)
Net loss per share of common stock    
Basic $ (0.50) $ (0.55)
Diluted $ (0.50) $ (0.55)