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Interlock USA, Inc., an ASSA ABLOY Group company based in Reno, Nev., is one of North America’s leading window and door hardware manufacturers. The original inventor of the automatic sash lock system for hung and sliding windows, Interlock is known for working closely with window and door manufacturers to create innovative designs that differentiate their products from the competition. Interlock’s key competitive strengths as a distributor are technical support, application engineering, product management, distribution, logistics, product bundling and cross selling.