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US Patent: 185,836
Machines for Making Hexagonal Nut Blank Bars
Patentee:
Charles H. Robison (exact or similar names) - Cleveland, Cuyahoga County, OH

USPTO Classifications:
470/89, 72/186, 72/194

Tool Categories:
specialty machines : nut or bolt making machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Sep. 25, 1876
Granted: Jan. 02, 1877

Patent Pictures:
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