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US Patent: 745,789
Variable Speed Countershaft
Patentee:
Conrad M. Conradson - Warren, Warren County, PA

USPTO Classifications:
474/53, 474/54

Tool Categories:
metalworking machines : metalworking machine mechanisms : metalworking variable speed mechanisms

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Jun. 03, 1903
Granted: Dec. 01, 1903

Patent Pictures:
USPTO pdf tiff
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