Federal Signal Corp., headquartered in Oak Brook, Illinois with 4,100 employees, designs and manufactures products for various sectors through its Environmental Solutions Group and Safety and Security Systems Group. The company produces street sweepers, sewer cleaners, emergency response systems, and more, under brands like Elgin and Vactor, serving municipal to military needs.
FSS filed a patent for "electronically controlled siren" on Thu, December 22, 2022. The patent was officially published on Thu, July 13, 2023.
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