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US Patent: 980,052
Grinding and polishing machine
Patentees:
John C. Blevney (exact or similar names) - Newark, NJ
John Hausman (exact or similar names) - Newark, NJ

USPTO Classifications:
451/245, 451/300, 451/301, 451/303, 451/338, 451/407

Tool Categories:
woodworking machines : sanding machines

Assignees:
None

Manufacturer:
Production Machine Co. - Greenfield, MA

Witnesses:
Unknown

Patent Dates:
Applied: May 20, 1909
Granted: Dec. 27, 1910

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Production Machine Co.

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