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公开(公告)号：US2603828A
公开(公告)日：1952-07-22
申请号：US78244547
申请日：1947-10-27
Applicant: GRAND RAPIDS HARDWARE COMPANY
Inventor： DICKINSON III HENRY RANDEL
IPC: E05D13/00
CPC classification number: E05D13/1253 , Y10T16/64
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