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公开(公告)号：US2708478A
公开(公告)日：1955-05-17
申请号：US29951652
申请日：1952-07-17
Applicant: FRANTZ MFG CO
Inventor： WOLF CECIL R , HOLLAND JOHN P , SEIDEL CHARLES E
IPC: E05B65/00
CPC classification number: E05B65/0021 , Y10T292/0803 , Y10T292/0839
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