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Exhibit 21

Subsidiaries of Registrant

List of Subsidiaries

 
1)
 
 
 
RealView Systems, Inc.
Colorado Corporation
 
2)
 
 
 
Xyros Systems, Inc., f/k/a Xyros Video, Inc.
Maryland Corporation
 
3)
 
 
 
Eastern Tech Manufacturing Corp.
Maryland Corporation

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Exhibit 21