Wisconsin
Department of Safety and Professional Services
Retrum, Darryl Richard
Professional Engineer
License number
19879-6
Date granted
07/25/1980
Date expires
07/31/2012
Class
Professional Engineer
Status
Expired
wisconsinengineering.org
ID 35538833
LAST UPDATED 2026-07-02 00:42:49 UTC
LAST UPDATED 2026-07-02 00:42:49 UTC
This website is unaffiliated with the Department of Safety and Professional Services. Please verify all information directly with the relevant official government authority.