Patent search ap:("ENGELHARDT ROBERT H" OR "SMITH DAVID A D") AND inv:"SMITH DAVID A D" Page 1

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发明授权
Portable lamp holder with adjustable reflector 失效
Title translation: 便携式灯座，可调节反光罩

公开(公告)号：US2602880A

公开(公告)日：1952-07-08

申请号：US15176250

申请日：1950-03-24

Applicant: ENGELHARDT ROBERT H , SMITH DAVID A D

Inventor： ENGELHARDT ROBERT H , SMITH DAVID A D

IPC: F21L14/00 , F21L14/02

CPC classification number: F21L14/00 , F21L14/02

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