Jean H. De La Harpe

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Transvaal, ZA

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Patents Grantslast 30 patents

Information Patent Grant
Axial fan
- Patent number 4,630,999
- Issue date Dec 23, 1986
- James Howden & Company Limited
- Jean H. De La Harpe
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES