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US Patent: 543,309
Machine for cutting key-seats
Patentees: David Lake (exact or similar names) - Philadelphia, PA Leon Lake (exact or similar names) - Philadelphia, PA USPTO Classifications: 409/177 Tool Categories: metalworking machines : key seating machines metalworking machines : broaching machines Assignees: Hattie I. Lake - Philadelphia, PA Leon Lake - Philadelphia, PA Manufacturer: Lake Bros. - Philadelphia, PA Witnesses: Sara Estabrook India Lake	Patent Dates: Applied: Oct. 01, 1894 Granted: Jul. 23, 1895 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Lake Bros.

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