Quarterly report pursuant to Section 13 or 15(d)

Inventories (Details)

v2.4.0.6
Inventories (Details) (USD $)
Oct. 31, 2012
Apr. 30, 2012
Notes to Financial Statements    
Raw materials $ 2,963,302 $ 1,921,151
Work in process 8,234 29,767
Finished goods 846,541 981,154
Inventories $ 3,818,077 $ 2,932,072