| Show Oklahoman Sues Oil Drilling Co Go I ILOS LOS ANGELES ANGELES Aug 8 A A sui suit brought by Erie P Halliburton of or Duncan Okla against the Federal Federal Fed Fed- Federa era eral Drilling com company pan of Los Angeles Angeles An An- Angeles geles alleging infringement ement of ot f patents patents patents pat pat- owned b by Halliburton an and in- in methods and apparatus used la In cementing oU oil wells ell was on tile file In federal court here toda today The action is expected to clear up several disputed points conI concerning concerning con con- rights involved in the ce cementing cementing ce- ce I processes ses in general use in oil fields field throughout the country countr- |