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US Patent: 1,255,304
Hollow Milling Tool
Patentee:
Emil Gairing - Detroit, MI

USPTO Classifications:
408/186, 408/203.5

Tool Categories:
metalworking machines : milling machines : milling machine cutters

Assignees:
Eclipse Interchangeable Counterbore Co. - Detroit, MI

Manufacturer:
Not known to have been produced

Witnesses:
L. E. Thomas
C. H. Michell
L. S. Woohull
Beatrice Buettner

Patent Dates:
Applied: May 05, 1917
Granted: Feb. 05, 1918

Patent Pictures:
USPTO pdf tiff
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Description:
L. E. Thomas - patent attorney

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