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Class Information
Number: 84/420A
Name: Music >
Description:










Sub-classes under this class:

Class Number Class Name Patents
84/1 Instruments 8
84/453 Accessories 398
84/DIG.1 Plural speakers 36
84/DIG.10 Feedback 129
84/DIG.11 Frequency dividers 50
84/DIG.12 Side; rhythm and percussion devices 371
84/DIG.13 Gas discharge tube 1
84/DIG.14 Harmonicas 14
84/DIG.15 Accordions 3
84/DIG.16 Crescendo 1
84/DIG.17 Cabinets 29
84/DIG.18 Tuning 83
84/DIG.19 Light sensitive resistor 17
84/DIG.2 Preference networks 120
84/DIG.20 Monophonic 30
84/DIG.21 Mechanical resonator 10
84/DIG.22 Chord organs 247
84/DIG.23 Electronic gates for tones 46
84/DIG.24 Piezoelectrical transducers 112
84/DIG.25 Pedal clavier 22
84/DIG.26 Reverberation 112
84/DIG.27 Stereo 37
84/DIG.28 Service manuals 0
84/DIG.29 Tape 29
84/DIG.3 Foldable; detachable; collapsible 25
84/DIG.30 Fret control 64
84/DIG.4 Chorus; ensemble; celeste 91
84/DIG.5 Chiff 5
84/DIG.6 Cathode-ray tube 31
84/DIG.7 Electric key switch structure 177
84/DIG.8 Keyed oscillators 40
84/DIG.9 Filtering 203


Patents under this class:

Patent Number Title Of Patent Date Issued











 
 
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