Inventor
HAHN VOLKER
5 patents
Patents
5 patentsUS4647256AMar 3, 1987
Method and apparatus for producing underground pipes
ZUEBLIN AG37 citations90
US4232822ANov 11, 1980
Method of and arrangement for correcting the height of railway upper structures
ZUEBLIN AG30 citations89
US4121398AOct 24, 1978
Space framework
ZUEBLIN AG13 citations70
US4308933AJan 5, 1982
Overhead sound attenuating cover for roadways and railways
ZUEBLIN AG4 citations60
US4168915ASep 25, 1979
Rotary drum
ZUEBLIN AG2 citations49