founded by Carl Heinrich Florenz Müller (1845-1912) and made glass lamp bulbs; 1895 - made X-ray tubes for Roentgen at factory in Bremer Reihe, Hamburg, Röntgenröhrenfabrik C.H.F. Müller; 1927/8 - moved to new factory in Hamburg-Fuhlsbüttel; 1928 - Muller merged with Philips, from 1987 - Philips Medical Systems