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Sewer-Clean-Out Cover

Description: Patent for specific improvements of sewer-clean-out covers that will "provide a cover for the clean out pipes of sewers, which cover will be securely held in place under ordinary circumstances and cannot be removed except by authorized parties carrying a certain form of key, adapted to release the fastening mechanism" (lines 10-16) including illustrations and instructions.
Date: September 16, 1913
Creator: Linskie, Benjamin B.
Item Type: Refine your search to only Patent
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