Braced frame of burglary -resisting window
The utility model relates to a braced frame of burglary -resisting window, including support bar, strut angle and special screw, the quantity of support bar is 4, and end to end's welding becomes the frame construction of a rectangle, strut angle of each welded fastening of the both ends of eve...
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Format: | Patent |
Sprache: | chi ; eng |
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