Olli E. J. Harala

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Toijala, FI

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Patents Grantslast 30 patents

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Method and slide-casting machine for the casting of hollow pre-cast...
- Patent number 4,755,338
- Issue date Jul 5, 1988
- Oy Partek AB
- Olli E. J. Harala
- B28 - WORKING CEMENT, CLAY, OR STONE