Tapio RITVANEN

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Raisio, FI

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for collecting surface layer of liquid
- Patent number 9,896,815
- Issue date Feb 20, 2018
- S.T. RITVANEN OY
- Tapio Ritvanen
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

Patents Applicationslast 30 patents

Information Patent Application
METHOD AND APPARATUS FOR COLLECTING SURFACE LAYER OF LIQUID
- Publication number 20160122965
- Publication date May 5, 2016
- S.T. Ritvanen Oy
- Tapio RITVANEN
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING