Dr. Böger Photosatz GmbH was founded in 1934 by Marius Böger (or Boeger). They made photocopying machines. Later, as Scangraphic, they got into typesetting equipment and fonts. In 2004, their font designs were acquired by Elsner&Flake.
What set the company apart in the 60s and 70s was the neat range of inlined, outlined and shadowed fonts that they produced.