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US Patent: 856,767
Handhold-forming machine
Patentees:
Andrew Jackson Colvin (exact or similar names) - Grants Pass, OR
Claude Gatch Hockett (exact or similar names) - Grants Pass, OR
John William Fitzpatrick (exact or similar names) - Grants Pass, OR

USPTO Classifications:
144/13, 144/136.8, 144/142, 144/245.1, 144/245.5, 409/192

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Jun. 11, 1907

Patent Pictures:
USPTO (New site tip)
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