Invention Grant
- Patent Title: Grinding machine
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Application No.: US70387424Application Date: 1924-04-03
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Publication No.: US1551155APublication Date: 1925-08-25
- Inventor: JOHNSON CHARLES E
- Applicant: JOHNSON CHARLES E
- Assignee: Charles E Johnson
- Current Assignee: Charles E Johnson
- Priority: US70387424 1924-04-03
- Main IPC: B24B7/16
- IPC: B24B7/16
Information query
