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公开(公告)号：US2456776A
公开(公告)日：1948-12-21
申请号：US64557946
申请日：1946-02-05
Applicant: FAUST RUDOLPH E
Inventor： FAUST RUDOLPH E
CPC classification number: B23B31/36 , B23B31/201 , B23B2260/088 , Y10T82/2571 , Y10T279/14
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