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US Patent: 2,336,845
Checking Device
Patentee: Harold V. Christensen (exact or similar names) - St. Clair Shores, Macomb County, MI USPTO Classifications: 33/501.16 Tool Categories: metalworking machines : gear measuring machines Assignees: Michigan Tool Co. - Detroit, Wayne County, MI Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Sep. 15, 1942 Granted: Dec. 14, 1943 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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