Quarterly report pursuant to Section 13 or 15(d)

Inventories (Tables)

v2.4.1.9
Inventories (Tables)
9 Months Ended
Jan. 31, 2015
Inventory Disclosure [Abstract]  
Inventories
    January 31,
2015
  April 30,
2014
Raw materials   $ 1,637,739     $ 1,576,238  
Work in process     28,432       63,631  
Finished goods     601,995       651,169  
    $ 2,268,166     $ 2,291,038