Invention Grant
US09027758B2 Collapsible sifter 有权
可折叠筛

Collapsible sifter
Abstract:
A collapsible sifter having a substantially rigid annular top rim, a substantially rigid annular bottom ring, a flexible annular middle portion having two or more living hinges to collapse the sifter from an open configuration to a collapsed configuration and a removably attachable bottom implement. First and second cooperating elements, associated with the annular bottom ring and the bottom implement, are used to removably attach the bottom implement to the bottom annular ring.
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