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US Patent: 1,781,192
Tapping attachment
Patentee: Harry G. Procunier (exact or similar names) - Chicago, IL USPTO Classifications: 408/124, 74/377 Tool Categories: metalworking machines : drilling and boring : tapping heads and chucks Assignees: Procunier Safety Chuck Co. - Chicago, IL Manufacturer: Procunier Safety Chuck Co. - Chicago, IL Witnesses: Unknown	Patent Dates: Applied: Mar. 11, 1929 Granted: Nov. 11, 1930 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for William L. Procunier, Procunier Safety Chuck Co.
Description: This patent simplifies the original Procunier tapping attachment.

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