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Inventories
12 Months Ended
Apr. 30, 2012
Inventories [Abstract]  
Inventory Disclosure [Text Block]

NOTE 2—INVENTORIES

The following table summarizes the components of inventories, as of April 30 of each year:

 
2012
2011
Raw materials
$
848,000

$
983,000

Work in process
296,000

300,000

Finished goods
85,000

118,000

 
$
1,229,000

$
1,401,000