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Robert W. Hughes

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Chuck for a rock drilling device

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Patent

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Heat exchanger

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Patent

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Method of making a cam shaft

F - Mech Eng,Light,Heat,Weapons – 01 – L
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Natural gas production optimization switching valve system

E - Fixed Constructions – 21 – B
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Plural-part earth bit, and an improved bit head therefor

E - Fixed Constructions – 21 – B
Patent

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Method of making a cam shaft

F - Mech Eng,Light,Heat,Weapons – 01 – L
Patent

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Natural gas production optimization switching valve system

E - Fixed Constructions – 21 – B
Patent

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Profile ID: LFCA-PAI-P-84226

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