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in creator/contributor: "Grisshauer, Charles L."  
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Elevator-door-operating Apparatus

Description: Patent for an electrically controlled means of automatically "opening and closing the doors of the elevator shaft" without slamming or banging the doors, including illustrations.
Date: May 18, 1915
Creator: Pitts, Hood
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Camp Bedding-Roll

Description: Patent for a bedding roll in which the main sheet is adapted to receive a mattress or be stuffed with straw, grass, or leaves to enable it to be used as a bed-sack.
Date: April 23, 1918
Creator: Waugh, Julia Nott
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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