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2452897
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Patent Grant
2452897
References
Source
Patent Number
2,452,897
Date Filed
Not available
Date Issued
Tuesday, November 2, 1948
76 years ago
CPC
G10K1/066 - the sounding member being a tube, plate or rod
G10K1/26 - Mountings Casings
US Classifications
340 - Communications: electrical
084 - Music
116 - Signals and indicators
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