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公开(公告)号：US2491848A
公开(公告)日：1949-12-20
申请号：US76547047
申请日：1947-08-01
Applicant: GEN ELECTRIC
Inventor： LEONARD BREADNER ROBERT , HENRY SIMMS CHARLES , WILLIAM HARRIS JOHN
IPC: C03B23/049
CPC classification number: C03B23/049
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