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公开(公告)号:US3105045A
公开(公告)日:1963-09-24
申请号:US16399562
申请日:1962-01-04
Applicant: SHARPLES CORP
Inventor: BORIG WALTER A
IPC: B04B7/04 , B04B11/02
CPC classification number: B04B11/02 , B04B7/04