Injury prevention and precision fixture of the hollow member to be used for hollow slabs
The present invention relates to a device for injury prevention and precision fixing for a hollow member used for a hollow slab. In the device for injury prevention for a hollow member for a hollow slab, an angle bar coupling hole perforated in the upper portion of a vertical shaft of a fixed tool i...
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Main Authors | , |
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Format | Patent |
Language | English Korean |
Published |
04.05.2018
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Subjects | |
Online Access | Get full text |
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