Date: February 22, 1887
Creator: McCallum, Walter Randolph
Description: Patent for a new and improved ant trap. This design consists in "[a]n ant-trap, comprising the body and the inward-projecting tubes having the protecting-caps on their inner ends, the outer faces of the caps being convex and provided with apertures of greater diameter than the bore of the inner end of the tube" (lines 90-95).
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