785-78572 Lecterns, Rostrums, And Speaker'S Stands, Pointers, Etc. | 785-78583 PRESENTATION SYSTEMS EQUIPMENT, INCLUDING PRESENTATION BOARDS AND MULTI-IMAGE DEVICES | 803-80340 MICROPHONES AND RELATED EQUIPMENT, WIRELESS SYSTEMS: CHESTSETS, EARPHONES, HANDSETS, HEADPHONES, ETC. | 803-80345 Music Systems And Components: Amplifiers, Mixers, Preamplifiers, Tuners, Turntables, Etc. | 803-80350 MUSIC SYSTEMS AND COMPONENT, STEREO ONLY | 803-80361 Public Address Systems, Stationary | 840-84070 VIDEO CAMERA-RECORDERS, ACCESSORIES AND PARTS, PORTABLE TYPE | 880-88000 VISUAL EDUCATION EQUIPMENT AND SUPPLIE, (SEE CLASS 285 FOR PROJECTION LAMPS) | 880-88011 AUDIO VISUAL EQUIPMENT AND SUPPLIES, (NOT OTHERWISE CLASSIFIED) | 880-88043 PROJECTION SCREENS: STANDARD AND REAR-PROJECTION TYPES | 880-88046 PROJECTION STANDS, TABLES, ETC.: STANDARD AND REAR-PROJECTION TYPES | 880-88049 PROJECTORS, FILMSTRIP, STANDARD TYPES ONLY; CARRYING CASES; PARTS, AND ACCESSORIES | 880-88058 PROJECTORS, OPAQUE, INCLUDING CARRYING CASES, PARTS AND ACCESSORIES, EPIDIASCOPES | 880-88061 PROJECTORS, OVERHEAD TRANSPARENCY, INCLUDING CARRYING CASES, PARTS AND ACCESSORIES | 880-88064 PROJECTORS, SLIDE, STANDARD TYPES ONLY, INCLUDING CARRYING CASES, PARTS AND ACCESSORIES | 880-88088 Transparencies (See Class 715 For Prepared Material) | 910-91002 Background Music Services | 939-93906 Audio-Visual Equipment Maintenance And Repair | 939-93977 SOUND EQUIPMENT, INCLUDING MICROPHONES, SPEAKERS, RECORDING EQUIPMENT, ETC., INSTALLATION, MAINTENANCE AND REPAIR | 939-93984 TELEVISION EQUIPMENT AND ACCESSORIES, INCLUDING VIDEO AND CLOSED CIRCUIT EQUIPMENT, MAINTENANCE AND REPAIR
