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US Patent: 2,000,421
Duplex control for radial drills
Patentees:
Lawrence Lee Schauer - Cincinnati, OH
Augustus Marius Sosa - Cincinnati, OH
John H. McKewen - Cincinnati, OH

USPTO Classifications:
173/19, 408/130, 408/14, 408/234

Tool Categories:
metalworking machines : drilling and boring : drill presses : radial drill presses
woodworking machines : wood drilling and boring : drill presses : radial drill presses

Assignees:
Cincinnati Bickford Tool Co. - Cincinnati, OH

Manufacturer:
Cincinnati Bickford Tool Co. - Cincinnati, OH

Witnesses:
Unknown

Patent Dates:
Applied: Apr. 30, 1931
Granted: May 07, 1935

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Cincinnati Bickford Tool Co.

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