Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yukihide Takata0
Yoshiyasu Kitagawa0
Date of Patent
October 12, 2021
0Patent Application Number
201902130
Date Filed
February 13, 2019
0Patent abstract
There is provided a keyboard instrument in which a plurality of white keys and a plurality of black keys are arranged in a widthwise direction, a total width dimension of the plurality of white keys that constitute one octave is set to 160 mm or less, and a width dimension of an upper surface of each of the black keys is set to 9 mm or more and 10.5 mm or less.
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