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US Patent: 379,566
Chain mortising machine
Patentee: Charles H. Douglas (exact or similar names) - Chicago, IL USPTO Classifications: 144/72, 144/84 Tool Categories: woodworking machines : joint making machines : mortising machines woodworking machines : wood drilling and boring : mortising machines Assignees: Chicago Mortising Machine Co. - Chicago, IL Manufacturer: Chicago Mortising Machine Co. - Chicago, IL New Britain Machine Co. - New Britain, CT Witnesses: Unknown	Patent Dates: Granted: Mar. 20, 1888 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Chicago Mortising Machine Co. Vintage Machinery entry for New Britain Machine Co.

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