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in creator/contributor: "Power, John H."

Patent for "an improved apparatus for destroying the cutting ants in their nests." (Lines 9-11) Includes instructions and illustrations.

Date: August 3, 1875

Creator: Fenner, Ferdinand A. & Power, John H.

Item Type: Patent

Partner: UNT Libraries Government Documents Department

Patent for artificial stone made of a special combination of cement that hardens and stays hard under water. It also does not conduct heat.

Date: March 19, 1895

Creator: Power, John H. & Power, Rufus M.

Item Type: Patent

Partner: UNT Libraries Government Documents Department