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Home › Method for setting up a telecommunication link to persons in closed facilities, such as passenger transport means, as well as a telecommunication system and network

Method for setting up a telecommunication link to persons in closed facilities, such as passenger transport means, as well as a telecommunication system and network

US Patent 6321084 · Granted Nov 20, 2001

Estimated economic value: $1,471,000 ⓘ

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