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US Patent: 1,692,439
Grinding Tool
Patentee:
Ernest A. Hall (exact or similar names) - Toledo, Lucas County, OH

USPTO Classifications:
384/191.2

Tool Categories:

Assignees:
Hall Manufacturing Co. - Toledo, Lucas County, OH

Manufacturer:
Hall Manufacturing Co. - Toledo, Lucas County, OH

Witnesses:
Unknown

Patent Dates:
Applied: Dec. 05, 1927
Granted: Nov. 20, 1928

Patent Pictures:
USPTO (New site tip)
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Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Hall Manufacturing Co.

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