Career
Oidtman is the namesake of Doctor H. Oidtmann GmbH, the oldest stained-glass workshop in Germany. Heinrich Oidtmann started his career as a medical doctor in Linnich, Germany and later established a stained glass workshop. Oidtmann drew inspiration in setting up the workshop from his use of glass slides.
His workshop would later grew into the Doctor H. Oidtmann GmbH by the efforts of his descendants.
