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US Patent: 191,311
Device for Punching Sheet-Metal for Pipe-Elbows
Patentee:
Greene Choate - East Saginaw, Saginaw County, MI

USPTO Classifications:
83/33, 83/468.94, 83/589, 83/598, 83/620, 83/633, 83/669

Tool Categories:
metalworking machines : metal punches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Apr. 30, 1877
Granted: May 29, 1877

Patent Pictures:
USPTO pdf tiff
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