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公开(公告)号：US838209A
公开(公告)日：1906-12-11
申请号：US1906310046
申请日：1906-04-05
Applicant: PATTERSON CLARENCE G
Inventor： PATTERSON CLARENCE G
CPC classification number: F15B11/0413 , Y10T137/7778 , Y10T137/86187
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