|  [ Tubes ]  
AET Japan, Inc.AMT Incorporation
 ATI-Advanced Technology, Inc.
 Hi-Technology Trading, Inc.
 Midoriya Electric Co., Ltd.
 NEC Microwave Tube, Ltd.
 New Japan Radio Co., Ltd.
 PTM Corp.
 Sogo Electronics, Inc.
 
 Advanced Electronics Technology Associates, Inc. [AET Japan, Inc.]
 California Tube Laboratory, Inc. [AET Japan, Inc.]
 HeatWave Labs, Inc. [AET Japan, Inc.]
 Keltec, A Crane Co. Company [Astech Corp.]
 L-3 Communications, Electron Devices [Midoriya Electric Co., Ltd.]
 Vertex Microwave Products, Inc. [Hi-Technology Trading, Inc.]
 
 
 |