William F Sieczkowski Jr

License

Licensed by

Illinois Department of Financial and Professional Regulation

License number

062048059

Status

Active

First issued

February 9, 1993

Expires

November 30, 2027

License holder

William F Sieczkowski Jr

Entity type

Individual

Classifications

• Licensed Professional Engineer Engineering, Architecture & Surveying

More from the license record

Current term began

09/12/2025

Other Illinois licenses under this name

• IL
  William F Sieczkowski Jr

  License 061020838

  Enrolled Professional Engineer Intern
  Active

  Mokena, IL

  Expires Jan 1, 2999

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