International Patent Issued 2023 – EP4237886 “Ultraviolet radiation filter, method for manufacturing said filter, and ultraviolet radiation germicidal device including said filter”
Inventors: Matteo Maria MAIFRINIAndrea USUELLI Google Patents PDF: https://patents.google.com/patent/EP4237886A1/en?oq=EP4237886 Abstract The invention relates to an ultraviolet radiation filter which is substantially opaque against ultraviolet radiations…
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