CH4587A - A twin-blade expander bit - Google Patents
A twin-blade expander bitInfo
- Publication number
- CH4587A CH4587A CH4587A CH4587DA CH4587A CH 4587 A CH4587 A CH 4587A CH 4587 A CH4587 A CH 4587A CH 4587D A CH4587D A CH 4587DA CH 4587 A CH4587 A CH 4587A
- Authority
- CH
- Switzerland
- Prior art keywords
- twin
- bit
- blade expander
- expander
- blade
- Prior art date
Links
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH4587T | 1892-02-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH4587A true CH4587A (en) | 1892-06-30 |
Family
ID=4187471
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH4587A CH4587A (en) | 1892-02-10 | 1892-02-10 | A twin-blade expander bit |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH4587A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1178386B (en) * | 1955-03-18 | 1964-09-24 | Wolfgang Ebeling Dipl Ing | Drilling machine for the production of large drill holes for mining or the like. |
-
1892
- 1892-02-10 CH CH4587A patent/CH4587A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1178386B (en) * | 1955-03-18 | 1964-09-24 | Wolfgang Ebeling Dipl Ing | Drilling machine for the production of large drill holes for mining or the like. |
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