Nils Harald Ahlgren

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133 00 Saltsjobaden, SW

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Patents Grantslast 30 patents

Information Patent Grant
Methods of shifting heavy and/or loaded structures
- Patent number 4,050,255
- Issue date Sep 27, 1977
- Nils Harald Ahlgren
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method of supporting bridge structures and like heavy-weight rigid...
- Patent number 3,979,787
- Issue date Sep 14, 1976
- Nils Harald Ahlgren
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Framework structures
- Patent number 3,945,169
- Issue date Mar 23, 1976
- Nils Harald Ahlgren
- E04 - BUILDING
Information Patent Grant
Lifting device for raising, lowering and suspending heavy loads
- Patent number 3,940,109
- Issue date Feb 24, 1976
- Nils Harald Ahlgren
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING