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US Patent: 2,375,079
Thread Grinding Machine
Patentee:
Harold V. Christensen (exact or similar names) - St. Clair Shores, Macomb County, MI

USPTO Classifications:
451/304

Tool Categories:
metalworking machines : grinders : thread grinders

Assignees:
Michigan Tool Co. - Detroit, Wayne County, MI

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Feb. 22, 1943
Granted: May 01, 1945

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

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