U.S. federal trademark · Serial No. 97139488 · Reg. No. 6999268
Optical filters; optical filters in the nature of optical filter films; holographic optical filters in the nature of optical deflectors for diffracting light of a given wavelength within a predefined range of wavelengths; filters for optical devices, instruments and apparatus; optical filters to provide protection against lasers and bright lights; optical filters in the nature of holographic notch filters; optical filters in the nature of holographic notch filters for use in fluorescence and Raman spectroscopy instruments not for medical purposes
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