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US Patent: 1,224,801
Stud Extractor and Tightener
Patentee: Edmund Sprung (exact or similar names) - Detroit, Wayne County, MI USPTO Classifications: 81/120, 81/182, 81/183, 81/186, 81/53.2 Tool Categories: specialty tools : stud extractors Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Sep. 03, 1915 Granted: May 01, 1917 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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