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1982-09-21
Manhole joint gasket assembly and joint formed therewith
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1993-11-02
Pressure testing of tubular fitting installed to a ported wall
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1993-12-28
Test cap unit for sealed fitting
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관 연결 조립체
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System and method for detecting leaks in a fluid filled vessel
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1932-01-05
Device for mixing gases and liquids
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1941-12-02
Continuous feed pipe joint tester
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1936-12-15
Pipe testing plug
SU416311A1
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1974-02-25
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2008-04-10
Leak testing device with a permanent coupling
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2004-07-15
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1988-04-02
パイプの横方向接続装置とその方法
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1961-09-12
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1965-05-18
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1978-09-15
Bouee pour la sustentation de tuyauteries de canalisations d'huile, de gaz et analogues immergees dans l'eau
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1936-10-27
Water meter coupling
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1958-08-12
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1969-07-14
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1989-04-14
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2000-07-18
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1956-03-20
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1979-04-13
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