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US Patent: 188,978
Adjustable Tap Wrench
Patentee: Roswell H. St. John (exact or similar names) - Springfield, OH USPTO Classifications: 408/240, 81/155, 81/77 Tool Categories: wrenches : tap wrenches and die stocks Assignees: None Manufacturer: Not known to have been produced Witnesses: Edward W. Mullikin A. T. Byers	Patent Dates: Applied: Mar. 02, 1877 Granted: Mar. 27, 1877 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Stan Schulz

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