Monday - December 23, 2024

Darkening Filter Comprising a Non-Uniform Pattern of Switchable Shutters

2024-11-26

ALEXANDRIA, Virginia, Nov. 26 -- 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, Minnesota has been assigned a patent (No. US 12150901 B2, initially filed May 19, 2020) developed by three inventors Claire R. Donoghue, Twyford, United Kingdom; Britton G. Billingsley, St. Paul, Minnesota; and Kristina M. Magnusson, Djurmo, Sweden, for "Darkening filter comprising a non-uniform pattern of switchable shutters." . . .

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Darkening Filter Comprising a Non-Uniform Pattern of Switchable Shutters

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