SU18542A1 - Spring stop in the threshold for mine lift doors - Google Patents
Spring stop in the threshold for mine lift doorsInfo
- Publication number
- SU18542A1 SU18542A1 SU60787A SU60787A SU18542A1 SU 18542 A1 SU18542 A1 SU 18542A1 SU 60787 A SU60787 A SU 60787A SU 60787 A SU60787 A SU 60787A SU 18542 A1 SU18542 A1 SU 18542A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- threshold
- spring stop
- lift doors
- mine lift
- mine
- Prior art date
Links
Description
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Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU18542A1 true SU18542A1 (en) | 1930-11-30 |
Family
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