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US Patent: 18,588
Improved machine for turning spiral forms
Patentee:
John C. Hintz (exact or similar names) - Cincinnati, OH

USPTO Classifications:
142/26

Tool Categories:
woodworking machines : specialty woodworking machines : rope and spiral cutting machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
George H. Knight
James H. Gridley

Patent Dates:
Granted: Nov. 10, 1857

Patent Pictures:
USPTO (New site tip)
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