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portable ortsunabhängiges device to monitor a selected local area
portable ortsunabhängiges device to monitor a selected local area
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机译:便携式ortsunabhängiges设备可监视选定的本地区域
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摘要
shown and described is a portable, independent device (a) to monitor a selected local area (b) on the occurrence of any factor, in particular, an alarm, and in the area (b), a telephone line (11) with
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