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US4040456A
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Openable bottom loading adapter for transport tank
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US4013096A
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Loading and unloading valve mechanism for transportation tank
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US4126294A
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Adapter valve mechanism for transportation tank
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US4011885A
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Manifold-valve structure
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US4009862A
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Hydraulically balanced remote controlled emergency valve for storage tank
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US3910551A
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Internal emergency valve for storage tank
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CA996671A
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Vapor proof junction box in combination with electrical float switch adjustable for height
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CA725039A
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Gusher valve
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CA522093A
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Removable sealing device for vehicle marking light
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CA494348A
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Split manifold valve
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CA654916A
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Chemical emergency valve
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CA551131A
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Manhole cover attaching means
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CA883113A
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Pipe cap and method of fabricating the same
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CA593758A
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Fabricated gate valve
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CA520456A
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Expanding plug for gate valve
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CA769953A
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Mechanical vent
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CA654932A
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Bottom loading emergency valve
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CA684134A
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Cascade emergency valve
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CA652825A
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Gusher emergency valve
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CA475769A
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Emergency valves
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