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US Patent: 2,992,565
Automatic Speed Change Mechanism
Patentees:
John A. Hansen - Milwaukee, Milwaukee County, WI
Kurt A. Riedel - Milwaukee, Milwaukee County, WI

USPTO Classifications:
192/3.58, 74/334, 74/335, 74/346, 74/364, 74/365

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

Assignees:
Kearney & Trecker Corp. - West Allis, Milwaukee County, WI

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Mar. 10, 1958
Granted: Jul. 18, 1961

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Kearney & Trecker Co.

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