86195739
Feb 17, 2014
Apr 21, 2015
Optical substrates with diffractive elements, namely, gratings and lenses, recorded thereon at the microscopic level; optical substrates with information, namely, text and images, recorded thereon at the microscopic level
Electrical and Scientific ApparatusRecording information, namely, text and images, for others on optical substrates at the microscopic level; recording diffractive elements, namely, gratings and lenses, for others on optical substrates at the microscopic level
Computer and Scientific