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US Patent: 1,435,873
Tool Holder
Patentee: Frank H. Petersen (exact or similar names) - Denver, Denver County, CO USPTO Classifications: 82/158 Tool Categories: metalworking machines : drilling and boring : drilling and boring tool holders Assignees: Frank H. Petersen - Denver, Denver County, CO Alfred L. Weston - Denver, Denver County, CO Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Feb. 18, 1920 Granted: Nov. 14, 1922 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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