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Patent for a cultivator. Illustration included.

Date: January 15, 1907

Creator: Nicholson, Matthew Harris & Rosenbaum, Eugene

Partner: UNT Libraries Government Documents Department

Patent for a refrigerating apparatus for the purpose of regulating the liquid refrigerant agents in the expansion coils. Illustrations included.

Date: December 15, 1908

Creator: Mayhew, John Daugherty

Partner: UNT Libraries Government Documents Department