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US Patent: 1,811,037
Abrasive disk
Patentees:
Frans O. Albertson - Sioux City, IA
Gustav Olsen - Sioux City, IA

USPTO Classifications:
15/180, 451/490, 451/496, 451/509

Tool Categories:
woodworking machines : handheld power tools : handheld sanders
woodworking machines : sanding machines : handheld sanders

Assignees:
Albertson & Co. - Sioux City, IA

Manufacturer:
Albertson & Co. - Sioux City, IA

Witnesses:
Unknown

Patent Dates:
Applied: Dec. 30, 1927
Granted: Jun. 23, 1931

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Albertson & Co.

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