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US Patent: 112,737
Shaping Metals
Improvement in Machines for Slotting and Cutting Metal
Patentee:
Salmon W. Putnam, Jr. - Fitchburg, Worcester County, MA

USPTO Classifications:
409/326, 409/328

Tool Categories:
metalworking machines : metal slotting machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Granted: Mar. 14, 1871

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Putnam Machine Co.

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