Founded in 1949, Byrne & Schaefer, Inc. has proudly served Lockport, Will County, and the greater Chicagoland area for generations. What began as a small engineering operation has grown into a trusted name in the design and manufacturing of low-inductance resistors, custom and specialty resistor solutions, and industrial-grade electrical components and assemblies for demanding applications. Backed by decades of hands-on experience, the company is built on precision manufacturing, problem-solving expertise, and a deep commitment to quality. Byrne & Schaefer, Inc. continues to deliver reliable, custom electrical solutions for industrial and commercial clients who require performance they can depend on. The company operates Monday through Friday by appointment only, ensuring focused, personalized service for every project.