CA890151A - Position restoring devices for mine roof props - Google Patents
Position restoring devices for mine roof propsInfo
- Publication number
- CA890151A CA890151A CA890151A CA890151DA CA890151A CA 890151 A CA890151 A CA 890151A CA 890151 A CA890151 A CA 890151A CA 890151D A CA890151D A CA 890151DA CA 890151 A CA890151 A CA 890151A
- Authority
- CA
- Canada
- Prior art keywords
- mine roof
- position restoring
- restoring devices
- roof props
- props
- 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 |
---|---|---|---|
CA890151T |
Publications (1)
Publication Number | Publication Date |
---|---|
CA890151A true CA890151A (en) | 1972-01-11 |
Family
ID=36396310
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA890151A Expired CA890151A (en) | Position restoring devices for mine roof props |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA890151A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109236339A (en) * | 2018-11-02 | 2019-01-18 | 陈成军 | Tunnel absorbing shock resistance bracket |
-
0
- CA CA890151A patent/CA890151A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109236339A (en) * | 2018-11-02 | 2019-01-18 | 陈成军 | Tunnel absorbing shock resistance bracket |
CN109236339B (en) * | 2018-11-02 | 2024-02-27 | 陈成军 | Tunnel shock absorption and impact resistance support |
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