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US Patent: 3,920,088
Power tool with continuous and pulsating torque output cycle Pneumatic impact wrench
Patentee: Edmund C. Dudek (exact or similar names) - St. Charles, IL USPTO Classifications: 173/169, 173/177 Tool Categories: Assignees: Thor Power Tool Co. - Aurora, IL Manufacturer: Thor Power Tool Co. - Aurora, IL Witnesses: Unknown	Patent Dates: Applied: Nov. 23, 1973 Granted: Nov. 18, 1975 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Thor Power Tool Co.

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