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| Frequency Devices, Inc. |   |
Summit Instruments, Inc. |   | |
Journal Of Computer Controlled Systems |   | |
ZTEC |   | |
Virginia Panel Corporation |   | |
Dawn VME |   | |
Midwest Micro Tek |   | |
Universal Switching Corporation |   | |
Racal Instruments |   | |
Condor Engineering |   | |
Advanced Power Designs |   | |
Tracewell Systems |   | |
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