Inventor
DE SIVRY BRUNO J M
9 patents
Patents
9 patentsUS4410210AOct 18, 1983
Retaining grippers
PETROLES CIE FRANCAISE33 citations84
US4442867AApr 17, 1984
Internal obturators for pipes
PETROLES CIE FRANCAISE8 citations71
US4357517ANov 2, 1982
Electron beam welding with beam focus controlled responsive to absorbed beam power
PETROLES CIE FRANCAISE7 citations71
US4305591ADec 15, 1981
Inflatable seals
PETROLES CIE FRANCAISE13 citations71
US4485344ANov 27, 1984
Apparatus for electromagnetically measuring the ovalization of a ferromagnetic pipe
PETROLES CIE FRANCAISE16 citations66
US4430550AFeb 7, 1984
Electron beam welding
PETROLES CIE FRANCAISE5 citations60
US4319709AMar 16, 1982
Positioning of an additional tubular element on a tubular structure
PETROLES CIE FRANCAISE5 citations60
US4358656ANov 9, 1982
Electron beam welding
PETROLES CIE FRANCAISE0 citations49
US4314135AFeb 2, 1982
Positioning of one or more tools relative to a tubular structure
PETROLES CIE FRANCAISE1 citations48