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Note 4 - Inventories, net
9 Months Ended
Dec. 31, 2012
Inventory Disclosure [Text Block]
Note 4 –Inventories, net

Inventories consist of:

   
December 31,
2012
   
March 31,
2012
 
             
Purchased parts
 
$
5,201,484
   
$
3,452,832
 
Work-in-process
   
1,791,992
     
1,725,395
 
Finished goods
   
10,555
     
45,748
 
Less: Inventory reserve
   
(200,000
)
   
(200,000
)
                 
   
$
6,804,031
   
$
5,023,975