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US Patent: 2,874,519
Expansible abrasive wheel
Patentees:
Sam A. Mercurio (exact or similar names) - Chicago, IL
John R. MacIntosh (exact or similar names) - Chicago, IL

USPTO Classifications:
451/506

Tool Categories:
industrial tools : grinding wheels
woodworking machines : sanding machines : belt sanders
metalworking machines : grinders : sharpening machines : grinding wheels

Assignees:
Mermac Products, Inc. - Chicago, IL

Manufacturer:
Mermac Products, Inc. - Chicago, IL

Witnesses:
Unknown

Patent Dates:
Applied: Aug. 06, 1957
Granted: Feb. 24, 1959

Patent Pictures:
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