Visual device for crane pipe

The invention relates to the technical field of crane pipes, in particular to a visual device for a crane pipe, which comprises a support frame, a mounting seat is slidably mounted on the inner wall of the support frame, a crane pipe main body is fixedly connected to the mounting seat, a driving ass...

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Hauptverfasser: MU DAOMING, WANG MEI
Format: Patent
Sprache:chi ; eng
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