Emblematic figure of contemporary bow making, Jean was taught by master Bernard OUCHARD at Mirecourt school from 1975 to 1978
then with Benoît ROLLAND in Paris.
During his prolific carrier Jean GRUNBERGER won numerous international prizes.
Headmaster of the Bow Making School of America 2001/2006
Instructor in Oberlin college 2002/2006
Instructor for ALADFI since 2007