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公开(公告)号：US2804415A
公开(公告)日：1957-08-27
申请号：US61107756
申请日：1956-09-20
Applicant: BELL TELEPHONE LABOR INC
Inventor： BOOTHBY OTIS L , WENNY JR DANIEL H
IPC: C22C28/00
CPC classification number: C22C28/00
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公开(公告)号：US2631118A
公开(公告)日：1953-03-10
申请号：US13434649
申请日：1949-12-21
Applicant: BELL TELEPHONE LABOR INC
Inventor： BOOTHBY OTIS L , WENNY JR DANIEL H
IPC: C22C1/02
CPC classification number: C22C1/023
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