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公开(公告)号：CA150706A
公开(公告)日：1913-09-30
申请号：CA150706D
申请日：1912-07-02
Applicant: SMITH WILLIAM ACHESON , INTERNAT ACHESON GRAPHITE COMPANY
Inventor： SMITH WILLIAM ACHESON
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公开(公告)号：CA150704A
公开(公告)日：1913-09-30
申请号：CA150704D
申请日：1912-07-02
Applicant: INTERNAT ACHESON GRAPHITE COMPANY , SMITH WILLIAM ACHESON
Inventor： SMITH WILLIAM ACHESON
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公开(公告)号：CA125397A
公开(公告)日：1910-05-03
申请号：CA125397D
申请日：1909-10-28
Applicant: INTERNAT ACHESON GRAPHITE COMPANY , SMITH WILLIAM ACHESON
Inventor： SMITH WILLIAM ACHESON
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