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US Patent: 822,016
Square
Patentee: James A. Rankin (exact or similar names) - Wheeling, WV USPTO Classifications: 403/323 Tool Categories: layout tools : squares : carpenter squares Assignees: James A. Rankin - Wheeling, WV Frank R. Scroggins - Wheeling, WV Manufacturer: Not known to have been produced Witnesses: H. E. Dunlap Frances Dunlap	Patent Dates: Applied: Dec. 23, 1905 Granted: May 29, 1906 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Russ Allen.
Description: Tapered tongue and groove system with locking screw.

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