US Patent: 8,929 - Machinery for grinding or polishing saw-blades, &c.


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US Patent: 8,929

Machinery for grinding or polishing saw-blades, &c.

Patentee:

William Southwell (exact or similar names) - Kensington, PA

USPTO Classifications:

451/200

Tool Categories:

tool making

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Edward Evans

James Eccles

Patent Dates:
Granted:	May 04, 1852

Patent Pictures:

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Description:

According to the 1873 "Subject-matter index of patents for inventions issued by the United States Patent Office", this patent was granted an extension.