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US Patent: 1,990,138
Measuring Device for Tube Walls
Patentee:
Hans Schüster (exact or similar names) - Immigrath (Ndrh.), Germany

USPTO Classifications:
29/33K, 33/800

Tool Categories:
layout tools : measurement gauges

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
none listed

Patent Dates:
Applied: Jan. 18, 1934
Granted: Feb. 05, 1935

Patent Pictures:
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Report data errors or omissions to steward Joel Havens
Description:
Application in Germany 03 Oct 1932.

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