Boiler/Steam Fit/Proc Piping contractor · Portland, OR
A & A Drilling Service Inc
WA L&I license no. AADRISI077QBUBI 600315263
ActiveActive — expires 13 May 2028.
Washington State Department of Labor & Industries · snapshot from July 2026
License status and dates
- License status
- Active
- First licensed
- 2 November 1993
- Current term expires
- 13 May 2028
Registration details
- License number
- AADRISI077QB
- Issuing agency
- Washington State Department of Labor & Industries
- UBI
- 600315263
- Business structure
- Corporation
- Principal on file
- Osterholme, Derek Bjorn
- Location
- Portland, Oregon 97268
- Phone on file
- (503) 659-8583
Trade classification
- Primary classification
- Boiler/Steam Fit/Proc Piping
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