Arm supporting base

Supports – Armrest or headrest – Armrest for writer

Patent

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Details

400715, B43L 1500, B41J 1162

Patent

active

061023450

ABSTRACT:
In order to make an arm supporting base small, to enable the arm supporting base to move horizontally and rotatably, to prevent an occurrence of a fatigue of the arm operating a mouse for personal computer and to enhance the efficiency of work, a plurality of ball bearings are interposed between a movable base and a fixed base in such a manner as the movable base is prevented from being removed from the fixed base and the movable base may move in all directions relatively to the fixed base in a certain range.

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patent: 5927663 (1999-07-01), Tseng

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