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David F. Thomas

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Ball type valve

F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent

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Coupling for fluid flow system

F - Mech Eng,Light,Heat,Weapons – 16 – L
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Electrically operated transfer valve for centrifugal pump

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Fire hydrant

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Patent

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Fire hydrant valve rod coupling

F - Mech Eng,Light,Heat,Weapons – 16 – K
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Profile ID: LFCA-PAI-P-6152

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