Thomas Donald Callahan
Thomas Donald Callahan's California Electrical Engineer stamp
Watermarked specimen
This downloadable California Electrical Engineer stamp specimen was generated for Thomas Donald Callahan from the public license details in this directory listing, including license number 25854. The preview is watermarked and does not prove that Thomas Donald Callahan approved or sealed a document.
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Thomas Donald Callahan is a Electrical Engineer licensed to practice in California. The credential is registered under license number 25854 and is currently active. It has been on record since 2025. Licensure is issued and verifiable through the California Board for Professional Engineers, Land Surveyors, and Geologists.