Horst Derwand

📍 Breidenbach, DE: #22 of 71 inventorsTop 35%

Overall (All Time): #2,129,904 of 4,157,543Top 55%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
7849937	Method and device for producing a cased string bore	—	2010-12-14
5758730	Method for removing an earth core out of a pipe laid in trench-less manner and go-devil for implementing the method	—	1998-06-02