Typewriters; Selective Printing Mechanisms, ; E.g. Ink-jet Printers, Thermal Printers; , I.e. Mechanisms Printing Otherwise Than From A Forme; Correction Of Typographical Errors
H04N
Pictorial Communication, E.g. Television
G06F
Electric Digital Data Processing
G02B
Optical Elements, Systems Or Apparatus
G03B
Apparatus Or Arrangements For Taking Photographs Or For Projecting Or Viewing Them; Apparatus Or Arrangements Employing Analogous Techniques Using Waves Other Than Optical Waves; Accessories Therefor
