Lennart Johansson

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Mariestad, SE

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Patents Grantslast 30 patents

Information Patent Grant
Floor construction comprising joists provided with level adjusting...
- Patent number 6,584,745
- Issue date Jul 1, 2003
- Nivell System AB
- Lennart Johansson
- E04 - BUILDING
Information Patent Grant
Screening arrangement in a ventilation system
- Patent number 6,554,699
- Issue date Apr 29, 2003
- Nivell System AB
- Lennart Johansson
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Joist
- Patent number 5,661,931
- Issue date Sep 2, 1997
- Nivell System Aktiebolag
- Lennart Johansson
- E04 - BUILDING
Information Patent Grant
Supporting element for use in casting concrete floors
- Patent number 5,433,051
- Issue date Jul 18, 1995
- Combiform Aktiebolag
- Lennart Johansson
- E04 - BUILDING
Information Patent Grant
Arrangement for the production of longitudinal screed slabs consist...
- Patent number 4,950,434
- Issue date Aug 21, 1990
- Permaban Southeast, Inc.
- Stig-.ANG.ke Ljungkvist
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Arrangement for laying concrete floors
- Patent number 4,884,384
- Issue date Dec 5, 1989
- Permaban Southeast, Inc.
- Stig-.ANG.ke Ljungkvist
- E04 - BUILDING
Information Patent Grant
Technique for the location of expansion joints when casting a concr...
- Patent number 4,576,510
- Issue date Mar 18, 1986
- Stig-ake Ljungkvist
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES