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US Patent: 162,194
Improvement in bolt-threading machines
Patentee:
Erhard Schlenker - Buffalo, NY

USPTO Classifications:
29/DIG.79, 29/DIG.91, 29/DIG.93, 408/66, 470/96

Tool Categories:
metalworking machines : metal threading machines

Assignees:
Gibson F. Howard - Buffalo, NY
Rufus L. Howard - Buffalo, NY
Erhard Schlenker - Buffalo, NY

Manufacturer:
Howard Iron Works - Buffalo, NY

Witnesses:
S. Finley
P. P. Burtis

Patent Dates:
Applied: Oct. 19, 1874
Granted: Apr. 20, 1875

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Howard Iron Works

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