Invention Grant
- Patent Title: Rock drill
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Application No.: US58627532Application Date: 1932-01-13
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Publication No.: US1867072APublication Date: 1932-07-12
- Inventor: ALBERT FEUCHT
- Applicant: CLEVELAND ROCK DRILL CO
- Assignee: Cleveland Rock Drill Co
- Current Assignee: Cleveland Rock Drill Co
- Priority: US58627532 1932-01-13
- Main IPC: E21B1/30
- IPC: E21B1/30
Information query
