US Patent: 2,277,213 - Thread grinding machines


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US Patent: 2,277,213

Thread grinding machines

Patentee:

William F. Dalzen (exact or similar names) - Grosse Pointe, MI

USPTO Classifications:

451/222

Tool Categories:

metalworking machines : grinders : thread grinders

Assignees:

None

Manufacturer:

Snyder Tool & Engineering Co. - Detroit, MI

Witnesses:

Unknown

Patent Dates:
Applied:	Apr. 19, 1941
Granted:	Mar. 24, 1942

Patent Pictures:

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Vintage Machinery entry for Snyder Tool & Engineering Co.

Description:

The Dalzen No. 1 Precision Thread Grinder was featured in a full-page ad from Snyder Tool & Engineering Co. in the March 1941 issue of The Tool Engineer, page 99.