[ Tubes ]

AET Japan, Inc.
AMT Incorporation
ATI - Advanced Technology, Inc.
Hi-technology Trading, Inc.
Midoriya Electric Co., Ltd.
NEC Microwave Tube, Ltd.
PTM Corp.
Sogo Electronics, Inc.



Advanced Electronics Technology Associates, Inc. [AET Japan, Inc.]
Applied Systems Engineering, Inc. [Midoriya Electric Co., Ltd.]
California Tube Laboratory, Inc. [AET Japan, Inc.]
dB Control [PTM Corp.]
HeatWave Labs, Inc. [AET Japan, Inc.]
L-3 Communications, Electron Devices [Midoriya Electric Co., Ltd.]
MCL, Inc. [Shoshin Corp.]
Vertex Microwave Products, Inc. [Hi-Technology Trading, Inc.]


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