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Note 4 Inventories, net
6 Months Ended
Sep. 30, 2011
Inventory Disclosure [Text Block]
Note 4                      Inventories, net

Inventories consist of:

   
September 30,
2011
   
March 31,
2011
 
             
Purchased parts
  $ 2,024,014     $ 2,119,957  
Work-in-process
    766,569       1,184,812  
Finished goods
    40,235       110,609  
Less: Inventory reserve
    (185,000 )     (445,000 )
                 
    $ 2,645,818     $ 2,970,378