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Inventories
6 Months Ended
Oct. 31, 2012
Inventories [Abstract]  
Inventory Disclosure [Text Block]

NOTE 3—INVENTORIES

The following table summarizes the components of inventories:

 
October 31, 2012
April 30, 2012
Raw materials
$
897,000

$
848,000

Work in process
554,000

296,000

Finished goods
82,000

85,000

 
$
1,533,000

$
1,229,000