Chicago Lock Company is a leading provider of security solutions for residential, commercial, and industrial applications. With over 100 years of experience, we specialize in designing, manufacturing, and distributing innovative locking systems that offer superior protection against unauthorized access. Our comprehensive product range includes locks, key systems, locksets, padlocks, and other related security products. We serve a diverse customer base across various industries, including government, healthcare, education, hospitality, and more. Visit our website to explore our wide range of high-quality security solutions.

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USPTO Data Jan 1 1976 - Dec 30 2025

34 Patents

#128 in Chicago, IL

#526 in Illinois

#9,678 in US

#19,057 in the World

Chicago, IL, United States of America

Chicago Lock Company

Forward Citations = 452

9 inventors:

Robert L Steinbach (22 out of 22 patents)

Frank J Scherbing (4 out of 11 patents)

Aloysius J Mikos (3 out of 5 patents)

4. Walter S Christopher (3 out of 3 patents)

5. Mitch Mlynarczyk (1 out of 1 patent)

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