- [ Tubes ]
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AET, Inc.
ATI (Advanced Technology, Inc.)
Cornes Dodwell, Ltd.
dB Control [PTM Corp.]
e2v Technologies [Cornes Dodwell, Ltd.]
L-3 Communications, Electron Devices [Midoriya Electric Co., Ltd.]
Midoriya Electric Co., Ltd.
NEC Microwave Tube, Ltd.
New Japan Radio Co., Ltd..
Richaradson Electronics K.K.
TMD Technologies, Ltd. [Yamada Corp.]
Vertex Microwave Products, Inc. [Hi-Technology Trading, Inc.]
Xicom Technology, Inc. [Midoriya Electric Co., Ltd.]
Yamada Corp.
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