ข้อมูลOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS (G02F takes precedence;optical elements specially adapted for use in lighting devices or systems thereof F21V0001000000-F21V0013000000; measuring-instruments, see the relevant subclass of class G01, e.g. optical rangefinders G01C; testing of optical elements, systems, or apparatus G01M0011000000; spectacles G02C; apparatus or arrangements for taking photographs or for projecting or viewing them G03B; sound lenses G10K0011300000; electron and ion "optics" H01J; X-ray "optics" H01J, H05G0001000000; optical elements structurally combined with electric discharge tubes H01J0005160000, H01J0029890000, H01J0037220000; microwave "optics" H01Q; combination of optical elements with television receivers H04N0005720000; optical systems or arrangements in colour television systems H04N0009000000; heating arrangements specially adapted for transparent or reflecting areas H05B0003840000)

เวอร์ชั่นข้อมูล