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Note 4 - Inventories, net
9 Months Ended
Dec. 31, 2013
Inventory Disclosure [Abstract]  
Inventory Disclosure [Text Block]
Note 4 – Inventories, net

Inventories consist of:

   
December 31,
2013
   
March 31,
2013
 
             
Purchased parts
 
$
3,624,430
   
$
4,418,989
 
Work-in-process
   
1,050,622
     
1,636,325
 
Finished goods
   
34,548
     
385,867
 
Less: Inventory reserve
   
(200,000
)
   
(200,000
)
                 
   
$
4,509,600
   
$
6,241,181