Sven A. Grondahl

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43, S-113 37 Stockholm, SE

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Patents Grantslast 30 patents

Information Patent Grant
Method and machine for making a spring-mattress web and a spring-ma...
- Patent number 6,049,959
- Issue date Apr 18, 2000
- Dux Design AB
- Sven Grondahl
- B68 - SADDLERY UPHOLSTERY
Information Patent Grant
Device for the bending of springs for spring interior mattresses
- Patent number 6,023,955
- Issue date Feb 15, 2000
- Lema Industrial Ltd.
- Sven Algot Grondahl
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Device in a clamping machine
- Patent number 4,910,851
- Issue date Mar 27, 1990
- Sven A. Grondahl
- B66 - HOISTING LIFTING HAULING