Pertti J. Helander

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Kuopio, FI

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Patents Grantslast 30 patents

Information Patent Grant
Openable closing device for freight or storage tanks
- Patent number 4,460,110
- Issue date Jul 17, 1984
- Esko Pollto Oy
- Pertti J. Helander
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL