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US Patent: 1,180,680
Apparatus for Controlling Magnetic Chucks
Patentee:
Oakley S. Walker - Worcester, Worcester County, MA

USPTO Classifications:
200/15, 361/145

Tool Categories:
metalworking machines : grinders : grinding attachments

Assignees:
O. S. Walker Co. - Worcester, Worcester County, MA

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Mar. 14, 1914
Granted: Apr. 25, 1916

Patent Pictures:
USPTO pdf tiff
Google Patents
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"Vintage Machinery" entry for O. S. Walker & Co.

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