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US Patent: 905,506
Variable Speed Mechanism
Patentee:
Adolph L. De Leeuw - Hamilton, Butler County, OH

USPTO Classifications:
74/348

Tool Categories:
metalworking machines : metalworking machine mechanisms : metalworking machine gearing : metalworking speed changing mechanisms

Assignees:
Cincinnati Milling Machine Co. - Cincinnati, OH

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Jun. 24, 1907
Granted: Dec. 01, 1908

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

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