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2070321
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Patent Grant
2070321
References
Source
Patent Number
2,070,321
Date Filed
Not available
Date Issued
Tuesday, February 9, 1937
87 years ago
CPC
H01L21/167 - Application of a non-genetic conductive layer
Y10T428/218 - Aperture containing
Y10T428/31678 - Of metal
US Classifications
257 - Active solid-state devices
148 - Metal treatment
427 - Coating processes
428 - Stock material or miscellaneous articles
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