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公开(公告)号：US1203821A
公开(公告)日：1916-11-07
申请号：US11003116
申请日：1916-07-19
Applicant: ELLCON COMPANY
Inventor： WAMPLER WILLIAM M , CONWELL WALTER L
CPC classification number: B61D1/04
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公开(公告)号：US1188863A
公开(公告)日：1916-06-27
申请号：US6853015
申请日：1915-12-24
Applicant: ELLCON COMPANY
Inventor： WAMPLER WILLIAM M , MURPHY ERNEST
CPC classification number: F16L58/182 , Y10T403/4608
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