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US Patent: 1,406,262
Combination Tool Tool for Laying Out Keyways
Patentee: Max Richard Kronert (exact or similar names) - Chicago, IL USPTO Classifications: 33/374, 33/451, 33/632 Tool Categories: layout tools : special purpose gauges layout tools : levels layout tools : squares Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Oct. 09, 1920 Granted: Feb. 14, 1922 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Ralph Brendler
Description: This is a specialized tool for positioning a milling cutter for cutting the keyway in a round shaft. It also features a built in level and square.

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