Quarterly report pursuant to Section 13 or 15(d)

Inventories (Tables)

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Inventories (Tables)
3 Months Ended
Jan. 31, 2014
Inventory Disclosure [Abstract]  
Inventories
    January 31,
2014
  April 30,
2013
Raw materials   $ 1,492,510     $ 1,425,386  
Work in process     9,889       88,603  
Finished goods     769,802       1,389,065  
    $ 2,272,201     $ 2,903,054