That prevents that needle body drops prevents bird faller
The utility model relates to a that prevents that needle body drops prevents bird faller, including the faller that is used for bearing the installation needle body, the faller on be provided with the fixed ear that is used for fixed faller, the needle body pass through spherical hinge structure and...
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Format: | Patent |
Sprache: | chi ; eng |
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Online-Zugang: | Volltext bestellen |
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