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公开(公告)号:US2115195A
公开(公告)日:1938-04-26
申请号:US12603637
申请日:1937-02-16
Applicant: COLE JOHN B
Inventor: COLE JOHN B
IPC: F16L29/00 , F16L29/02
CPC classification number: F16L29/00 , F16L29/02