Patrick J O Callaghan
Patrick J O Callaghan's Illinois Professional Engineer stamp
Watermarked specimen
This downloadable Illinois Professional Engineer stamp specimen was generated for Patrick J O Callaghan from the public license details in this directory listing, including license number 062047373. The preview is watermarked and does not prove that Patrick J O Callaghan approved or sealed a document.
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Patrick J O Callaghan is a Professional Engineer licensed to practice in Illinois. The credential is registered under license number 062047373 and is currently active. It has been on record since 1992. Licensure is issued and verifiable through the Illinois Department of Financial and Professional Regulation - Design Professionals.