Patent search ap:("UNION CARBIDE CORP") AND inv:"NEWLON JOHN D" Page 1

1.

发明授权
Continuous mining machine having roof fall receiving conveying means 失效
Title translation: 连续采矿机具有屋顶下落接收输送装置

公开(公告)号：US2978235A

公开(公告)日：1961-04-04

申请号：US73562258

申请日：1958-05-15

Applicant: UNION CARBIDE CORP

Inventor： FELBECK GEORGE T , HEIMASTER JOHN W , NEWLON JOHN D

IPC: E21C35/00 , E21C35/20

CPC classification number: E21C35/00 , E21C35/20

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