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Insecticide Apparatus

Description: Patent for an insecticide apparatus. Illustration included.
Date: October 18, 1904
Creator: Berger, Otto
Partner: UNT Libraries Government Documents Department

Marine-Engine Governor.

Description: Patent for marine engine governor "designed to maintain uniformity of speed of the engine when the resistance to the propeller or propellers is varied" (lines 11-13), including illustrations and description of construction.
Date: August 18, 1903
Creator: Corneliussen, Ivar
Partner: UNT Libraries Government Documents Department

Supplemental Bed and Guide Attachment

Description: Patent for a supplemental bed and guide attachment. Illustration included.
Date: December 18, 1906
Creator: Heckel, Albert F.
Partner: UNT Libraries Government Documents Department

Paper-Holder for Enlarging-Cameras.

Description: Patent for an improvement in holders attached to enlarging-cameras to hold the paper being exposed: "The object of the invention is to provide a simple and convenient form of paper-holder in which the paper may be readily inserted and removed and from which the light will be effectually excluded" (lines 15-19).
Date: February 18, 1902
Creator: Hutchings, George B.
Partner: UNT Libraries Government Documents Department

Device for Enlarging Negatives.

Description: Patent for a new or improved device to enlarge negatives; that is simple, portable, and ready to use, including illustrations.
Date: February 18, 1902
Creator: Hutchings, George B.
Partner: UNT Libraries Government Documents Department
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