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DE Patent: DE-422,675
Mit Feinzeiger versehenes, insbesondere zum Pruefen der Steigung von Innengewinde bestimmtes Geraet
With Fine Pointer Provided, in Particular Equipment Intended for Examining the Upward Gradient of Internal Thread
Patentee:
Fried. Krupp Akt.Ges. - Essen, Ruhr Germany

USPTO Classifications:

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Granted: Dec. 05, 1925

Patent Pictures:
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