发明授权
US07049939B2 Power line carrier system 有权
电力线载波系统

Power line carrier system
摘要:
The power line carrier system provides with a filter in a power branch apparatus removable from an external power line. The filter passes a power line carrier signal in a signal mode for the external power line, and interrupts another power line carrier signal which is in a signal mode different from the mode for the external power line.
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