License holder summary

Roelof (Ralph) Den Hartigh is a Architects, Engineers And Land Surveyors - Professional Engineer licensed to practice in Colorado. The address on file for Roelof (Ralph) Den Hartigh is Jdh Engineering Inc, 3000 Ivanrest Sw Suite B, Grandville, MI, 49418-9418. This licensed professional license is not current. The license was granted 08/12/1994 and expired on 10/31/2013.

Colorado

Division of Professions and Occupations

Roelof (Ralph) Den Hartigh
Architects, Engineers And Land Surveyors - Professional Engineer
License number
29945
Date granted
08/12/1994
Date expires
10/31/2013
Class
Architects, Engineers And Land Surveyors - Professional Engineer
Status
Expired
Address
Jdh Engineering Inc, 3000 Ivanrest Sw Suite B, Grandville, MI, 49418-9418
coloradolicensing.org
ID 27090542
LAST UPDATED 2026-07-04 17:39:17 UTC

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