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Animal-Poke

Description: Patent for an animal poke worn on the head of cattle to prevent jumping outside the field which allows the cow to graze freely while wearing the poke.
Date: July 16, 1907
Creator: Seay, Mark Machel
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Partner: UNT Libraries Government Documents Department

Composition of Matter.

Description: Patent for a briquet fuel formula made primarily from lignite and other derived products, which is cheaper to produce than other formulas.
Date: July 23, 1907
Creator: Lohmann, August Samuel Frederic
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Partner: UNT Libraries Government Documents Department

Apparatus for Testing Errors of Refraction

Description: Patent for an eye testing device that has a movable lens, a measuring device for correction, and two different cards with test type on them which are fed into the machine during testing for astigmatism and myopia, presbyopia, and hyperopia to determine the level of correction needed in glasses.
Date: July 2, 1907
Creator: Bahn, Gustavus Adolphus
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Partner: UNT Libraries Government Documents Department
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