Wisconsin
Department of Safety and Professional Services
Langdon, Roy A
Professional Engineer
License number
16208-6
Date granted
12/23/1976
Date expires
07/31/1984
Class
Professional Engineer
Status
wisconsinengineering.org
ID 12578944
LAST UPDATED 2026-05-26 06:54:09 UTC
LAST UPDATED 2026-05-26 06:54:09 UTC
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