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US Patent: 2,271,817
Micrometer Mechanism
Patentees:
Hans Ernst (exact or similar names) - Cincinnati, OH
Albert H. Dall (exact or similar names) - Cincinnati, OH

USPTO Classifications:
475/176, 60/392, 91/32, 91/370, 91/375R

Tool Categories:
metalworking machines : grinding machines

Assignees:
Cincinnati Grinders, Inc. - Cincinnati, OH

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Sep. 09, 1938
Granted: Feb. 03, 1942

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Cincinnati Grinders, Inc.

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