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US Patent: 3,049,002
Device for measuring the Roughness of Surfaces
Patentee:
Hermann Hediger (exact or similar names) - Winterthur, Switzerland

USPTO Classifications:
73/105

Tool Categories:
layout tools : measurement gauges

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
none listed
Patent Dates:
Applied: Feb. 24, 1959
Granted: Aug. 14, 1962

Patent Pictures:
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Description:
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