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1266142
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Information
Patent Grant
1266142
References
Source
Patent Number
1,266,142
Date Filed
Not available
Date Issued
Tuesday, May 14, 1918
106 years ago
CPC
G10H5/08 - tones generated by heterodyning
US Classifications
040 - Card, picture, or sign exhibiting
283 - Printed matter
984 - Musical instruments
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