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US Patent: 90,461
Dressing Millstones
Patentees:
Samuel Prettyman (exact or similar names) - Mumford, Kent County, England
John Wallis (exact or similar names) - Greenwich, Kent County, England

USPTO Classifications:
125/27

Tool Categories:
trade specific : miller

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: May 25, 1869

Patent Pictures:
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