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US Patent: 83,791
Casting Screws
Patentee:
William Potts (exact or similar names) - Handsworth, Stafford County, England

USPTO Classifications:
164/40

Tool Categories:
specialty tools : foundry casting apparatus

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Nov. 03, 1868

Patent Pictures:
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