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公开(公告)号：US971934A
公开(公告)日：1910-10-04
申请号：US1909480032
申请日：1909-02-25
Applicant: CLEVELAND STEEL TOOL COMPANY
Inventor： SIEGRIST CHARLES F
CPC classification number: F16K31/34 , Y10T137/27 , Y10T137/2703 , Y10T137/7371
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公开(公告)号：US967845A
公开(公告)日：1910-08-16
申请号：US1908412254
申请日：1908-01-23
Applicant: CLEVELAND STEEL TOOL COMPANY
Inventor： SIEGRIST CHARLES F
CPC classification number: F16K31/34 , Y10T137/7371
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