CA291992A - Retracing device for rock drill - Google Patents
Retracing device for rock drillInfo
- Publication number
- CA291992A CA291992A CA291992A CA291992DA CA291992A CA 291992 A CA291992 A CA 291992A CA 291992 A CA291992 A CA 291992A CA 291992D A CA291992D A CA 291992DA CA 291992 A CA291992 A CA 291992A
- Authority
- CA
- Canada
- Prior art keywords
- rock drill
- retracing
- retracing device
- drill
- rock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA291992T |
Publications (1)
Publication Number | Publication Date |
---|---|
CA291992A true CA291992A (en) | 1929-08-06 |
Family
ID=35228804
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA291992A Expired CA291992A (en) | Retracing device for rock drill |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA291992A (en) |
-
0
- CA CA291992A patent/CA291992A/en not_active Expired
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