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US4026329A
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Method and apparatus for remotely and releasably sealing a pipeline
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US3908682A
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Methods and apparatuses for remotely and releasably sealing a pipe line
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GB999354A
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Improvements relating to liquid storage tanks
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US3212116A
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Pipeline scraper-passing system
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US3167206A
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Secondary seal for floating tank roof
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US3191613A
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Two-way check valve combination
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US3116503A
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Automatic line selector
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US3148701A
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Pipe line valve position indicator
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US3118466A
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Pressure operated by-pass valve for pumping apparatus
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US3106309A
|
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Secondary seal for floating tank roof
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US3106310A
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Primary seal for floating tank roof
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US3028879A
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Self-actuating valve
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US3060964A
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Valve having vented housing
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US3028744A
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Process and apparatus for calibrating a large capacity fluid flow meter
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US3025464A
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Capacitance probe for a pipe line
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US3038732A
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Inflatable seal bushing for pipeline casing
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US2977993A
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Non-metallic pipe end closure
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US3087431A
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Apparatus for monitoring production or transportation equipment by detecting and indicating malfunction of pump
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US2782804A
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Pipe spacing device
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US2761083A
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End turn supports for electrical machines
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