The cause of death was heart failure, per his stepson Peter C. Sprung. He was 85 years old
Norbert Neugebauer died in 1992.
Norbert Skalden died in 1981.
Norbert Moret died in 1998.
Norbert Masur died in 1971.
Norbert Kricke died in 1984.
Norbert Wollheim died in 1998.
Norbert Pearlroth died in 1983.
Norbert Čapek died in 1942.
Norbert Klein died in 1933.
Norbert Zafimahova died in 1974.
Norbert Pfennig died in 2008.
Norbert Mueller died in 1956.