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United States Patent 3,817,746
Issue Date: June 18, 1974

Current U.S. Class: 148/432 ; 148/436; 148/96; 148/98; 257/E39.006; 257/E39.017; 420/901; 428/567; 428/611; 428/930; 505/801; 505/813; 505/814; 505/815; 505/822; 505/930
Current International Class: H01L 39/12 (20060101); H01L 39/14 (20060101)



For U.S. patent law, rules, and procedures see MPEP.

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