4. C - Chemistry, Metallurgy
  5. 04
  6. B

Jiro Watanabe

C - Chemistry – Metallurgy – 04 – B

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Inventor

Country: Japan

Counter-rotating axial-flow fan

F - Mech Eng,Light,Heat,Weapons – 04 – D
Patent

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Endless track belt system

B - Operations – Transporting – 62 – D
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Unburned magnesia-carbon refractory

C - Chemistry – Metallurgy – 04 – B
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Profile ID: LFCA-PAI-P-1137963

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