#USPTO: 15.05.04 - Video game players with screens, handheld, Handheld video game players, Digital music players, PDA (personal digital assistant), Tablet computers, handheld, MP3 Players #USPTO: 15.05.05 - Postage meters (printing machines), Tickertape machines (printing machines), Scanner machines for digital document imaging, Telefax machines, Fax (facsimile) machines, Printers, Copy machines, 3D printers, Printing machines, Photocopiers #Andere Büromaschinen #USPTO: 20.01.25 - Weights, paper, Tape, adhesive, not in dispenser, roll, Rubber bands, Ribbons, typewriter, Paperweights, Paper weights, Masking tape (roll), Letter openers, Hole punches (office supplies), Holders, Letter, Erasers (alone), Cases, pencil, Book marks, Book ends, Blotters, ink, Bands, rubber, Adhesive tape (not in dispenser) #USPTO: 26.19.02 - Cylinders (geometric)