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2715055
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Information
Patent Grant
2715055
References
Source
Patent Number
2,715,055
Date Filed
Not available
Date Issued
Tuesday, August 9, 1955
68 years ago
CPC
G01D9/10 - the recording element
G01D15/08 - for spark erosion
G01S1/72 - using ultrasonic, sonic or infrasonic waves
US Classifications
346 - Recorders
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