Double-strength buffer fastening device capable of adjusting the clearance of the non-welding fence
The present invention provides a dual-strength shop-absorbing fastening apparatus capable of adjusting the clearance of a non-welded fence to adjust the clearance by the elasticity for a change rate caused by contraction or expansion of a crossbar inserted to be fastened and fixed between post bosse...
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Format: | Patent |
Sprache: | eng ; kor |
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