Wisconsin
Department of Safety and Professional Services
Mertens, John Michael
Professional Engineer
License number
21156-6
Date granted
11/20/1981
Date expires
07/31/2016
Class
Professional Engineer
Status
Active
wisconsinengineering.org
ID 35540108
LAST UPDATED 2026-05-12 07:21:52 UTC
LAST UPDATED 2026-05-12 07:21:52 UTC
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