Inventor

ROETHER KURT

3 patents

Patents

3 patents

US4153283AMay 8, 1979

Casing joint

MANNESMANN AG59 citations91

US4710245ADec 1, 1987

Method of making tubular units for the oil and gas industry

MANNESMANN AG36 citations87

US4326699AApr 27, 1982

Oil-tempering apparatus for pipes

MANNESMANN AG3 citations51