Markku Lehtonen

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Routio, FI

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Patents Grantslast 30 patents

Information Patent Grant
Method of preserving plywood and particle board against decay and m...
- Patent number 6,444,329
- Issue date Sep 3, 2002
- UPM-Kymmene Oy
- Markku Lehtonen
- B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
Information Patent Grant
Connector for connecting wooden beams to one another
- Patent number 5,006,006
- Issue date Apr 9, 1991
- Metsa-Serla Oy
- Markku S. Lehtonen
- E04 - BUILDING
Information Patent Grant
Joint for connecting wooden beams to each other, and the use of the...
- Patent number 4,891,927
- Issue date Jan 9, 1990
- Metsaliiton Teollisuus OY
- Matti O. Kairi
- E04 - BUILDING