TROPEL
precision optics, namely, lens housings with ultra-high density deep UV optical disks, photo lithographic catadioptric reduction lenses; metrology instruments, namely, interferometers, [diffractive cylinder] grazing-incidence interferometer, laser based interferometer for measuring deviations from flatness of a surface, apparatus for analyzing semiconductor wafers during the polishing process
Registered · July 5, 2001 · 76280500 ·