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公开(公告)号：US3075344A
公开(公告)日：1963-01-29
申请号：US3846860
申请日：1960-06-24
Applicant: UNITED STATES STEEL CORP
Inventor： FENNER JAMES M , GURECKI WILLIAM A
IPC: D07B1/06
CPC classification number: D07B1/068 , D07B1/0686 , D07B2201/2023 , D07B2201/2024 , D07B2201/2055 , D07B2201/2067 , D07B2205/201 , D07B2205/2046 , D07B2801/12 , D07B2801/14
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