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Inventories
12 Months Ended
Apr. 30, 2013
Inventories [Abstract]  
Inventory Disclosure [Text Block]
NOTE 2—INVENTORIES

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

 
2013
2012
Raw materials
$
850,000

$
848,000

Work in process
281,000

296,000

Finished goods
260,000

85,000

 
$
1,391,000

$
1,229,000