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US Patent: RE516
Improvement in automatic grain-weighing machines
Patentee:
Rufus Porter (exact or similar names) - Washington, DC

USPTO Classifications:
177/19

Tool Categories:
agricultural : grain scales

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Joseph H. Audoim
Charles H. Oches
Patent Dates:
Granted: Dec. 22, 1857

Reissue Information:
Reissue of 17,230 (May 05, 1857)

Patent Pictures:
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