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Inventories
3 Months Ended
Jul. 31, 2011
Note 3 — Inventories [Abstract]  
Inventory Disclosure [Text Block]
Inventories
 
The components of inventories are summarized as follows:
 
 
July 31,
2011
April 30,
2011
Raw materials
$
900,000


$
983,000


Work in process
324,000


300,000


Finished goods
109,000


118,000


 
$
1,333,000


$
1,401,000