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Building Construction

Description: Patent for metal beams used in building construction that have perforated plates to allow the passage of concrete through the plate when the metal piece is embedded in concrete thus strengthening the attachment of the metal and the concrete.
Date: May 14, 1907
Creator: Keyser, William H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Cotton Chopper, Scraper, and Cultivator

Description: Patent for improvements so that the "choppers may be raised, in order to leave standing such of the growth of the cotton as is necessary, or while turning corners; third, in means hereinafter to be described, by which the depth at which the scrapers and choppers run into the ground maybe adjusted" (lines 16-22).
Date: May 6, 1890
Creator: Ellis, David P,
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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