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US Patent: 9,537
Apparatus for Cutting Screws on Pipes and Other Articles
Arrangement of Screw-Cutting Dies
Patentee:
Andrew Mayer (exact or similar names) - Philadelphia, PA

USPTO Classifications:
470/66, 470/70

Tool Categories:
industrial tools : taps and dies

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Jan. 11, 1853

Patent Pictures:
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