Invention Grant
- Patent Title: Rock-drill.
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Application No.: US1905264433Application Date: 1905-06-09
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Publication No.: US810639APublication Date: 1906-01-23
- Inventor: GIBSON ARTHUR H
- Applicant: INGERSOLL SERGEANT DRILL CO
- Assignee: Ingersoll Sergeant Drill Co
- Current Assignee: Ingersoll Sergeant Drill Co
- Priority: US1905264433 1905-06-09
Information query
