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US Patent: 156,705
Gear Cutting Attachments for Lathes
Patentee:
William P. Hopkins (exact or similar names) - Lawrence, Essex County, MA

USPTO Classifications:
409/223, 74/816

Tool Categories:
metalworking machines : gear making machines
metalworking machines : metal lathes : metal lathe accessories and attachments

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: May 21, 1874
Granted: Nov. 10, 1874

Patent Pictures:
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