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US Patent: 1,961,925
Testing Device
Patentees:
John C. Drader (exact or similar names) - Detroit, Wayne County, MI
William F. Dalzen (exact or similar names) - Gross Point Park, Wayne County , MI

USPTO Classifications:
33/501.14

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: Dec. 24, 1928
Granted: Jun. 05, 1934

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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