Inventor
SUDREAU BERNARD
FR3 patents
Patents
3 patentsUS4370541AJan 25, 1983
Electron beam chamber for butt welding pipes
PETROLES CIE FRANCAISE8 citations68
US4368374AJan 11, 1983
Vacuum chamber for electron beam butt welding of pipes
PETROLES CIE FRANCAISE2 citations57
US4493966AJan 15, 1985
Internal mandrel used in an operation of butt joining two lengths of tubing by welding
PETROLES CIE FRANCAISE0 citations35