Inventor
WASSEN JOHANN
4 patents
Patents
4 patentsUS4038550AJul 26, 1977
Method and an apparatus for the measuring of the wall thickness of a tube
MANNESMANN ROEHREN WERKE AG8 citations66
US3963514AJun 15, 1976
Removal of excess metal from the welding seam in the interior of a pipe
MANNESMANN ROEHREN WERKE AG4 citations57
US3950978AApr 20, 1976
Stretch-forming of long tubes
MANNESMANN ROEHREN WERKE AG3 citations57
US4006622AFeb 8, 1977
Continuous process for the production of very long precision tubes and installation for carrying out the process
MANNESMANN ROEHREN WERKE AG3 citations52