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US Patent: 150,524
Improvement in plow-beams
Patentee:
John C. Butterfield (exact or similar names) - Chicago, IL

USPTO Classifications:
172/754

Tool Categories:
agricultural : plows

Assignees:
Byron C. Bradley - Chicago, IL
John C. Butterfield - Chicago, IL

Manufacturer:
Not known to have been produced

Witnesses:
I. H. Elliott
G. L. Chapin

Patent Dates:
Applied: Feb. 07, 1874
Granted: May 05, 1874

Patent Pictures:
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