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US Patent: 128,287
Improvement in machines for straightening rolled-metal plates
Patentee:
Ralph Crooker (exact or similar names) - Boston, MA

USPTO Classifications:
72/220

Tool Categories:
metalworking machines : metal straightening machines

Assignees:
Bay State Iron Co. - Boston, MA

Manufacturer:
Not known to have been produced

Witnesses:
Francis Gould
M. W. Frothingham

Patent Dates:
Granted: Jun. 25, 1872

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Bay State Iron Co.

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