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in subjects: "rats"

Patent for "a compound or composition for the extermination of ants, moles, salamanders, prairie-dogs, large rats, &c." (lines 11-13).

Date: August 21, 1888

Creator: Simpson, James Thomas

Item Type: Patent

Partner: UNT Libraries Government Documents Department

Patent for a trap for rodents. The invention consists of multiple doors for actuation by the weight of the rodent. Illustration included.

Date: April 16, 1907

Creator: Yturri, Henry

Item Type: Patent

Partner: UNT Libraries Government Documents Department

Patent for a rat trap. Illustration included.

Date: December 28, 1909

Creator: Turnbo, Lycurgus S.

Item Type: Patent

Partner: UNT Libraries Government Documents Department

Patent for improvements in animal traps, in particular mouse and rat traps. Illustrations included.

Date: June 19, 1917

Creator: Stockburger, Charles. W.

Item Type: Patent

Partner: UNT Libraries Government Documents Department