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US Patent: 1,101,516
Carpenter's Marking Device
Patentee: John E. Ahlvin (exact or similar names) - Joliet, IL USPTO Classifications: 144/27, 33/197 Tool Categories: layout tools : marking gauges : butt gauges Assignees: None Manufacturer: Not known to have been produced Witnesses: Nellie B. Dearborn O. C. Avisus T. E. Gaylord Chas. H. Buell	Patent Dates: Applied: Jun. 14, 1913 Granted: Jun. 30, 1914 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Ralph Brendler
Description: This is a butt gage that allows all three hinges to be placed and marked at once.

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