| 摘要 |
A filter envelope which is filled with ground coffee or other drinkable dry granular substance by a user and sealed for use comprises two (2) round filter media sections crimped together about a perimeter and an extended opening along one (1) edge. The user would fill the interior space of the filter with a desired amount of chosen dry granular substance through the opening. A preferred embodiment comprises the dry granular substance to comprise ground coffee for subsequent brewing within a conventional coffee machine including those such as percolators that require the filter to have a central hole.
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