Ladder Stiffener
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2026-07-14
ALEXANDRIA, Virginia, July 14 -- LEVERAGE DESIGN HOLDING, LLC, Huntersville, North Carolina has been assigned a patent (No. US 12680382 B2, initially filed Dec. 11, 2019) developed by Daniel R. Crum, Huntersville, North Carolina, and Caleb D. Crum, Huntersville, North Carolina, for "Ladder stiffener." . . .
