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Donald E. Carlson

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Adjustable support for transmission lines

E - Fixed Constructions – 04 – H
Patent

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Backflow preventer

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

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Check valve

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

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Frostproof backflow preventer

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

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Portable grain dryer

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Patent

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Profile ID: LFCA-PAI-P-188479

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