Wisconsin
Department of Safety and Professional Services
Derksen, Robert R
Professional Engineer
License number
10109-6
Date granted
04/26/1967
Date expires
07/31/2000
Class
Professional Engineer
Status
wisconsinengineering.org
ID 12572708
LAST UPDATED 2026-07-04 05:05:54 UTC
LAST UPDATED 2026-07-04 05:05:54 UTC
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