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1432424
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Information
Patent Grant
1432424
References
Source
Patent Number
1,432,424
Date Filed
Not available
Date Issued
Tuesday, October 17, 1922
102 years ago
CPC
B21D53/82 - perforated music sheets pattern sheets
G10G3/02 - using mechanical means only
US Classifications
346 - Recorders
033 - Geometrical instruments
084 - Music
234 - Selective cutting
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