Patent search ap:("KEYSTONE CONSOLIDATED IND INC") AND inv:"STONE ROY A" Page 1

1.

发明授权
Counterbalancing lid and hinge support 失效
Title translation: 反平衡盖和铰链支撑

公开(公告)号：US3452388A

公开(公告)日：1969-07-01

申请号：US3452388D

申请日：1968-02-23

Applicant: KEYSTONE CONSOLIDATED IND INC

Inventor： STONE ROY A

IPC: E05F1/12 , E05F3/16 , E05F3/18

CPC classification number: E05F1/1261 , E05Y2800/26 , E05Y2900/20 , Y10T16/193 , Y10T16/53834 , Y10T16/53835 , Y10T16/61

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