Inventor

HAHN GUERRY L

US3 patents

Patents

3 patents

US4194718AMar 25, 1980

Choke

CAMERON IRON WORKS INC29 citations79

US4240609ADec 23, 1980

Flow control apparatus

CAMERON IRON WORKS INC18 citations71

US4193307AMar 18, 1980

Apparatus for indicating subsea well head pressure

CAMERON IRON WORKS INC11 citations71