Invention Grant
- Patent Title: Impact drill
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Application No.: US52717944Application Date: 1944-03-20
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Publication No.: US2425012APublication Date: 1947-08-05
- Inventor: SNYDER ROBERT E
- Applicant: SNYDER OIL TOOL CORP
- Assignee: Snyder Oil Tool Corp
- Current Assignee: Snyder Oil Tool Corp
- Priority: US52717944 1944-03-20
- Main IPC: E21B4/10
- IPC: E21B4/10
Information query
