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US Patent: 1,567,442
Grinder
Patentee:
Frank S. Hyland (exact or similar names) - Milwaukee, WI

USPTO Classifications:
451/340, 74/606R

Tool Categories:
industrial tools : hand grinders

Assignees:
Prairie du Chien Tool Co. - Prairie du Chien, WI

Manufacturer:
Prairie Tool Co. - Prairie du Chien, WI
Prairie du Chien Tool Co. - Prairie du Chien, WI

Witnesses:
Unknown
Patent Dates:
Applied: Mar. 24, 1920
Granted: Dec. 29, 1925

Patent Pictures:
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Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Prairie Tool Co.

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