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公开(公告)号:US920344A
公开(公告)日:1909-05-04
申请号:US1907395765
申请日:1907-10-03
Applicant: KERR JOHN R
Inventor: KERR JOHN R
CPC classification number: E05B65/0823 , E05Y2201/22
公开(公告)号:US920344A
公开(公告)日:1909-05-04
申请号:US1907395765
申请日:1907-10-03
Applicant: KERR JOHN R
Inventor: KERR JOHN R
CPC classification number: E05B65/0823 , E05Y2201/22