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Door Check.

Description: Patent for a new and improved door check. This design "consists in providing the door with a sliding rod, which is adapted to be actuated so as to engage with a retaining-block attached to the floor by the knob-shank, which is provided with a dog for raising and lowering the rod" (lines 17-22).
Date: January 13, 1885
Creator: Niggli, Emil
Partner: UNT Libraries Government Documents Department
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