Patent search ap:("ALUMINUM CO OF AMERICA") AND inv:"GROWDON JAMES P" Page 1

1.

发明授权
Floor construction for bridges and the like 失效
Title translation: 桥梁等地板施工

公开(公告)号：US2050313A

公开(公告)日：1936-08-11

申请号：US67160033

申请日：1933-05-18

Applicant: ALUMINUM CO OF AMERICA

Inventor： GROWDON JAMES P

IPC: E01C9/08 , E01D19/12

CPC classification number: E01C9/083 , E01D19/125 , E01D2101/30

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