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US Patent: 981,810
Grindstone Attachment
Patentee:
David I. Sterling - Berea, Cuyahoga County, OH

USPTO Classifications:
125/11.03, 125/37, 451/213, 451/369, 451/380

Tool Categories:
metalworking machines : grinders : grinding attachments

Assignees:
Cleveland Stone Co. - Cleveland, Cuyahoga County, OH

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Apr. 20, 1906
Granted: Jan. 17, 1911

Patent Pictures:
USPTO pdf tiff
Google Patents
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"Vintage Machinery" entry for Cleveland Stone Co.

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