4. C - Chemistry, Metallurgy
  5. 25
  6. D

Sinclair Hobbs Leonard

C - Chemistry – Metallurgy – 25 – D

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Air cooling for radial engines

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

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Anti-friction bearing

C - Chemistry – Metallurgy – 25 – D
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Infinite variable blower drive

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Patent

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Infinitely variable blower drive

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Patent

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Radial aircraft engine

F - Mech Eng,Light,Heat,Weapons – 02 – B
Patent

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Profile ID: LFCA-PAI-P-736702

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