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US Patent: 400,820
Metal Turning Lathe
Patentee:
John R. Back (exact or similar names) - Worcester, Worcester County, MA

USPTO Classifications:
29/52, 82/138

Tool Categories:
metalworking machines : metal lathes

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Jul. 05, 1887
Granted: Apr. 02, 1889

Patent Pictures:
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