AfterGlow, LLC, controls two patents for photoluminescent devices, and it manufactures and sells various photoluminescent exit signs based on that proprietary technology. AfterGlow says Jessup Manufacturing Company does two, without Afterglow’s permission. AfterGlow controls U.S. Patent No. 8,286,378 entitled Advanced Photoluminescent Components andFormulation / Fabrication Methods for Production Thereof and U.S. Patent No. 8,479,423 entitled…
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