License holder summary

FREDERICK O YOHN is a Professional Engineer licensed to practice in Pennsylvania. The address on file for FREDERICK O YOHN is DANVILLE PA 17821. This engineers license is not current. The license was granted 05/23/1946 and expired on 01/31/1987.

Department of State

Registration Board for Professional Engineers, Land Surveyors and Geologists

FREDERICK O YOHN
Professional Engineer
License number
PE007545L
Date granted
05/23/1946
Date expires
01/31/1987
Class
Professional Engineer
Status
Expired
Address
DANVILLE PA 17821
engineeringpa.org
ID 37508470
LAST UPDATED 2026-03-27 08:25:33 UTC

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