Measuring and testing – Vibration – By mechanical waves
Patent
1975-12-18
1978-12-26
Kreitman, Stephen A.
Measuring and testing
Vibration
By mechanical waves
73638, G01N 2904
Patent
active
041310268
ABSTRACT:
The seam of a pipe is tested sequentially from various directions and with differently directed test beams to search for differently oriented defects, and repeatedly for stepwise testing each portion of the same.
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patent: 3868847 (1975-03-01), Gunkel
Jannsen Klaus-Uwe
Kaiser Dieter
Ries Karl
Kreitman Stephen A.
Mannesmannrohren-Werke AG
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