Patent search ap:("CHAMBER OF MINES SERVICES LTD") AND inv:"CRAMP M" Page 1

1.

发明专利
IMPROVEMENTS IN ROCKCUTTING MACHINES 未知

公开(公告)号：ZA7209021B

公开(公告)日：1974-02-27

申请号：ZA7209021

申请日：1972-12-21

Applicant: CHAMBER OF MINES SERVICES LTD

Inventor： JOUGHIN N , HOJEM J , CRAMP M , GLOSSOP M

IPC: E21C20060101 , E21C

2.

发明专利
IMPROVEMENTS IN ROCKCUTTING MACHINES 未知

公开(公告)号：ZA729021B

公开(公告)日：1974-02-27

申请号：ZA729021

申请日：1972-12-21

Applicant: CHAMBER OF MINES SERVICES LTD

Inventor： JOUGHIN N , HOJEM J , CRAMP M , GLOSSOP M

IPC: E21C20060101 , E21C

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