UNT Libraries Government Documents Department - 11 Matching Results

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Book Guard

Patent for a book guard with an illustration.

Date: December 21, 1909

Creator: Boatright, John B.

Item Type: Patent

Automatic Valve

Patent for an automatic valve that uses a lever to open and close quickly, with illustrations.

Date: November 20, 1906

Creator: Pinkerton, Henry S.

Item Type: Patent

Boiler Cleaning Compound

Patent for a boiler cleaning compound for steam-boilers and furnaces to prevent buildup from hard water.

Date: September 27, 1904

Creator: López, Néstor

Item Type: Patent

Automatic Valve

Patent for an automatic valve, "designed to automatically control the water-supply to a suitable reservoir through the operation of a float (lines 9-11), with illustrations.

Date: April 25, 1905

Creator: Pinkerton, Henry S.

Item Type: Patent

Valve

Patent for improvement to a valve design, with illustrations.

Date: January 8, 1907

Creator: Pinkerton, Henry S.

Item Type: Patent

Medical Compound

Patent for a medical compound which "when taken internally, is a cure for gonorrhea, gravel, dysentery, and diarrhea, and when applied externally a cure for rheumatism" (lines 12-14).

Date: September 4, 1906

Creator: Mendez, Jesus M.

Item Type: Patent