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Patent for a formula for an insecticide for the Mexican cotton boll weevil.

Date: March 4, 1912

Creator: Newell, Wilmon

Partner: UNT Libraries Government Documents Department

Patent for a rail securing device which prevents the rails from spreading.

Date: March 25, 1913

Creator: Tritico, Leonard

Partner: UNT Libraries Government Documents Department

Patent for a safety railroad-switch which is meant to prevent vertical displacement.

Date: March 30, 1915

Creator: Leach, Felix

Partner: UNT Libraries Government Documents Department