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Improvement in Spectacle-Frames.

Description: Patent for "spectacle-frames in which the bows are turned into a coil near the points where they are connected to the lens-hoops for the purpose of forming spring-joints, instead of the ordinary pivot-joints." (Lines 6-10) Includes instructions and illustrations.
Date: November 30, 1875
Creator: Stewart, John W.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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