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US4723919A Telephone interface connection device 失效
电话接口连接设备

Telephone interface connection device
摘要:
The present invention relates to telephone network interface devices and includes a plug and a jack disposed in a block, the block being fitted within a housing. The location of the block within the housing and its manner of disposition protects the device from tampering and removal. The plug and jack are protected against the environment by a waterproof cover and resilient seals.
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