Patent search ap:("PILKINGTON BROTHERS LTD") AND inv:"RICHARDSON DONALD ARTHUR" Page 1

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发明授权
Reflecting road beacons 失效
Title translation: 反光路灯

公开(公告)号：US3466985A

公开(公告)日：1969-09-16

申请号：US3466985D

申请日：1967-11-06

Applicant: PILKINGTON BROTHERS LTD

Inventor： RICHARDSON DONALD ARTHUR , WATERS JOHN ROBERT

IPC: E01F9/06 , E01F9/07

CPC classification number: E01F9/571 , E01F9/553

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