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2241027
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Information
Patent Grant
2241027
References
Source
Patent Number
2,241,027
Date Filed
Not available
Date Issued
Tuesday, May 6, 1941
83 years ago
CPC
G10H5/16 - using cathode ray tube
US Classifications
084 - Music
313 - Electric lamp and discharge devices
315 - Electric lamp and discharge devices: systems
327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
984 - Musical instruments
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