GERHARDT CHRISTENSEN A/S

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STORVORDE, DK

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Patents Applicationslast 30 patents

Information Patent Application
Method and mechanism for opening and closing of manhole covers
- Publication number 20090257823
- Publication date Oct 15, 2009
- Gerhardt Christensen A/S
- Poul E. Christensen
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING