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US Patent: 52,995
Improvement in locks
Patentees: George A. Walker (exact or similar names) - Boston, MA F. L. Walker (exact or similar names) - Boston, MA Anson Hardy (exact or similar names) - Boston, MA USPTO Classifications: 70/372, 70/409, 70/493 Tool Categories: hardware : locks transportation : canals : locks household : door and window hardware Assignees: None Manufacturer: Not known to have been produced Witnesses: F. Gould J. B. Crosby	Patent Dates: Granted: Mar. 06, 1866 Antedated: Feb. 28, 1866 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for G. A. Walker Machine Co.

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