Complex sentence: In 1904, Gerber founded the "Dr. N. Gerber's Acid-Butyrometry Ltd., Leipzig", which later merged with another entity to create "Dr. N. Gerber's m.b.H Zurich and Leipzig" to produce and develop the Gerber instruments.
Split into simpler sentences: In 1904, Gerber founded the "Dr. N. Gerber's Acid-Butyrometry Ltd., Leipzig". The two companies merged to "Dr. N. Gerber's m.b.H Zurich and Leipzig" to produce and develop the Gerber instruments.