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US4514453A Loose fill packing element of hooked configuration 失效
挂钩配置松散填充元件

Loose fill packing element of hooked configuration
摘要:
The packing elements are each formed with a hooked configuration so as to abut each other without interlocking with each other. The free ends of the two legs of each element project beyond the main body portions so as to impart a hooked effect to the elements. The elements can be poured from a hopper into a container.
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