John D. Petersen: key obituary facts
Is John D. Petersen dead? Yes. John D. Petersen died on September 17, 2025, at age 77.
Cause of death: John D. Petersen's cause of death has not been publicly confirmed.
What was John D. Petersen known for?
He was known as American chemist.
American chemist
Died on Wednesday September 17th 2025