George Christian Gebelein, U.S. Patent for a Design for a Door Knocker

14-Jul-14

George Christian Gebelein, U.S. patent for a design for a door knocker, July 14, 1914.

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Citation Information

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  • Title George Christian Gebelein, U.S. Patent for a Design for a Door Knocker
  • Keywords George, Christian, Gebelein, patent, design, door, knocker
  • Website Name Immigrant Entrepreneurship
  • URL
  • Access Date December 10, 2023
  • Publisher German Historical Institute
  • Original Published Date
  • Date of Last Update August 9, 2018