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Hair-Spring Locator
Patent for a hair spring locator, a tool used to locate and measure the hair spring of a watch. Illustrations included.
Date:
November 26, 1907
Creator:
Friedman, Bernhard Zadoc
System:
The Portal to Texas History
Tent and Attachment.
Patent for a new and improved tent. This design is "to provide a tent-frame in such a manner that it may be readily folded into small compass, and which when extended for use will be very strong and serviceable" (lines 14-17). To this end, it consists of a cap, "of the rafters pivoted in the walls of said recesses and having their ends formed with a short incline or bevel and a longer or different incline or bevel" (lines 1-4).
Date:
November 26, 1889
Creator:
Turner, Epraim Meral
System:
The Portal to Texas History