Patents by Inventor Heinrich Janke

Heinrich Janke has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Microscope stand with protected turret
    Patent number: 4283111
    Abstract: Disclosed is a microscope stand which permits a lens turret and an eyepiece mounted on the stand to be mounted close enough together to eliminate the necessity of an intervening tube lens. In permitting this mounting of the lenses, a recess is provided in the stand which substantially weakens the mounting structure. Vertical webs are provided in the preferred embodiment which extend adjacent the recess and external to the lens turret which strengthen the microscope stand and mounting structure.
    Type: Grant
    Filed: January 28, 1980
    Date of Patent: August 11, 1981
    Assignee: Ernst Leitz Wetzlar GmbH
    Inventors: Karl Wieber, Heinrich Janke, Winfried Kraft, Robert Lisfeld
  • Microscope
    Patent number: D263057
    Type: Grant
    Filed: June 7, 1979
    Date of Patent: February 16, 1982
    Assignee: Ernst Leitz Wetzlar GmbH
    Inventors: Heinrich Janke, Hans-Kurt Uellenberg
  • Mirror reflex camera
    Patent number: D267884
    Type: Grant
    Filed: June 3, 1980
    Date of Patent: February 8, 1983
    Assignee: Ernst Leitz Wetzlar GmbH
    Inventors: Hans-Kurt Uellenberg, Heinrich Janke
  • Binocular
    Patent number: D272361
    Type: Grant
    Filed: September 25, 1981
    Date of Patent: January 24, 1984
    Assignee: Ernst Leitz Wetzlar GmbH
    Inventors: Alfred Hengst, Heinrich Janke, Hans-Kurt Uellenberg, Heinz Keiner
  • Binocular
    Patent number: D272362
    Type: Grant
    Filed: September 25, 1981
    Date of Patent: January 24, 1984
    Assignee: Ernst Leitz Wetzlar GmbH
    Inventors: Alfred Hengst, Heinrich Janke, Hans-Kurt Uellenberg, Heinz Keiner
  • Inverted image microscope
    Patent number: D276351
    Type: Grant
    Filed: May 17, 1983
    Date of Patent: November 13, 1984
    Assignee: Ernst Leitz Wetzlar GmbH
    Inventors: Heinrich Janke, Hans-Kurt Uellenberg
  • Binocular
    Patent number: D287369
    Type: Grant
    Filed: May 3, 1984
    Date of Patent: December 23, 1986
    Assignee: Ernst Leitz Wetzlar G.m.b.H.
    Inventors: Heinrich Janke, Alfred Hengst, Hans-Kurt Uellenberg
  • Binocular
    Patent number: D292412
    Type: Grant
    Filed: May 23, 1984
    Date of Patent: October 20, 1987
    Assignee: Ernst Leitz Wetzlar G.m.b.H
    Inventors: Heinrich Janke, Alfred Hengst, Hans-Kurt Uellenberg
  • Pair of binoculars
    Patent number: D332106
    Type: Grant
    Filed: March 28, 1990
    Date of Patent: December 29, 1992
    Assignee: Leica Camera GmbH
    Inventors: Alfred Hengst, Heinz Keiner, H. Peter Farnung, Heinrich Janke
  • Pair of binoculars
    Patent number: D332107
    Type: Grant
    Filed: March 28, 1990
    Date of Patent: December 29, 1992
    Assignee: Leica Camera GmbH
    Inventors: Alfred Hengst, Heinz Keiner, H. Peter Farnung, Heinrich Janke