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US Patent: 186,890
Improvement in screw-cutting dies
Albert J. Smart - Greenfield, MA

USPTO Classifications:
408/162, 408/180

Tool Categories:
industrial tools : taps and dies
metalworking tools : taps and dies

Wiley & Russell Manufacturing Co. - Greenfield, MA

Wiley & Russell Manufacturing Co. - Greenfield, MA

Dwight B. Kellogg
Philipp Tubalt

Patent Dates:
Applied: May 10, 1876
Granted: Jan. 30, 1877

Patent Pictures:
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"Vintage Machinery" entry for Wiley & Russell Manufacturing Co.

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