作者: Joel S. Beaton
DOI:
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摘要: The present invention provides a particulate collection apparatus for use in mixing powdery substances such as mortar and grout into paste like workable compound. engages top surface of container. includes plurality equidistant spaced openings, preferably along its which extend hollowed member. member further an exteriorly situate opening mates with vacuum hose. As the creates downward draft that draws billowing particulates through storage