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2197115
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Information
Patent Grant
2197115
References
Source
Patent Number
2,197,115
Date Filed
Not available
Date Issued
Tuesday, April 16, 1940
84 years ago
CPC
H01L21/161 - Preparation of the foundation plate, preliminary treatment oxidation of the foundation plate, reduction treatment
H01L21/02565 - Oxide semiconducting materials not being Group 12/16 materials
H01L21/02614 - Transformation of metal
US Classifications
148 - Metal treatment
257 - Active solid-state devices
438 - Semiconductor device manufacturing: process
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