US3270769A
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Vacuum insulating system for jacketed piping systems
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US3336584A
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Tell-tale system for jacketed piping systems
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US3304954A
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Housing duct for utility devices
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US2871035A
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Anchor
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US2749945A
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Capping device for use in testing conduit lines
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US2680901A
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Method of assembling jacketed conduit systems
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US2649769A
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Jacketed valve
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US2674947A
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Fuel supply system
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US2696835A
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Conduit construction
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US2641451A
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Heat exchanger
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US2658530A
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Combined support and turbulence effecting device
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US2592574A
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Pipe joint fitting
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US2650111A
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Expansion joint enclosure
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US2658527A
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Conduit system
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US2570246A
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Expansion means for jacket or conduit systems
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US2511343A
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Prefabricated piping system
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US2078879A
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Fittings for plumbing systems
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US1964123A
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Pipe or like device
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CA524407A
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Pipe support
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CA540123A
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Jacketed valves
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