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US Patent: 518,146
Machine for Forming Screw Threads
Patentee:
Otto Henning (exact or similar names) - Magdeburg-Buckau, Prussia, German Empire

USPTO Classifications:
164/216

Tool Categories:
metalworking machines

Assignees:
Grusonwerk - Magdeburg-Buckau, Prussia, German Empire

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Mar. 27, 1893
Granted: Apr. 10, 1894

Patent Pictures:
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Report data errors or omissions to steward Joel Havens
Description:
Patneted in Germany 15 Oct 1890, #55,994 and in England 30 Jun 1892, # 12,172.

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