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3481241
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Information
Patent Grant
3481241
References
Source
Patent Number
3,481,241
Date Filed
Not available
Date Issued
Tuesday, December 2, 1969
55 years ago
CPC
G10G1/02 - Chord or note indicators, fixed or adjustable, for keyboard of fingerboards
G09B15/006 - with indication of the keys or strings to be played on instruments
G09B15/008 - with indication of the keys or strings to be played on instruments
US Classifications
084 - Music
235 - Registers
984 - Musical instruments
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