EX-21 4 c10441exv21.htm SUBSIDIARIES OF THE REGISTRANT exv21
 

Exhibit 21
 
Subsidiaries of the Registrant
 
             
        Percentage of
 		  State of Incorporation
Parent
 
Subsidiary
 
Ownership
 
or Organization
 
HEI, Inc. 
  Cross Technology, Inc.   100%   Minnesota