Quarterly report pursuant to Section 13 or 15(d)

Inventories (Tables)

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Inventories (Tables)
3 Months Ended
Oct. 31, 2013
Inventory Disclosure [Abstract]  
Inventories
    October 31,
2013
    April 30,
2013
 
Raw materials   $ 1,207,336     $ 1,425,386  
Work in process     206,433       88,603  
Finished goods     767,974       1,389,065  
    $ 2,181,743     $ 2,903,054