U.S. federal trademark · Serial No. 76345616
"Er-doped fiber amplifiers, modular er-doped fiber amplifiers, optical switches, external modulation 1550nm transmitters, optical auto switches, amplified spontaneous emission broadband light sources, distributed feed-back light sources, multi-wavelength light sources"
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.