UNT Libraries Government Documents Department - 3 Matching Results

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Window-Fastener.

Description: Patent for a spring lever for fastening sliding windows, including illustration.
Date: August 31, 1858
Creator: Root, Irving

Escapement for Timekeepers.

Description: Patent for the improvement in the escapement of the watch for a "more regular and less liable to get out of order" through wear (lines 23-24), including illustration.
Date: October 12, 1858
Creator: Bishop, Josiah
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