A door buttress that is used for shear force wall side housing door opening in a wall mouth prefabricated installation
The utility model provides a door buttress that is used for shear force wall side housing door opening in a wall mouth prefabricated installation, includes two at least components, is equipped with the elasticity piece on being located the top surface of the component at top, is located the subaeria...
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Format: | Patent |
Sprache: | chi ; eng |
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