Legal Opinion
Halliburton Oil Well Cementing Co. v. Walker
Court of Appeals for the Ninth Circuit
Decided December 28, 1944No. 10513PublishedCited by 11 opinions
1Opinion of the Court
HEALY, Circuit Judge.
Involved here are cross appeals from a decree in an infringement suit. The court held valid and infringed two patents of Walker, these being No. 2,156,519 and reissue No. 21,383. It adjudged invalid Walker’s patent No. 2,209,944.
For convenience we shall refer to the adverse parties as Walker and Halliburton, Walker being the plaintiff. The several patents will be discussed in turn.
Patent No. 2,156,519, 1 The object of this invention is to measure the location of obstructions in oil wells, with particular reference to apparatus for determining the location below the well…
2Cases cited5 opinions
- Eibel Process Co. v. Minnesota & Ontario Paper Co.Supreme Court of the United States · 1923
- Cochrane v. DeenerSupreme Court of the United States · 1877
- Bates v. CoeSupreme Court of the United States · 1878
- Corning v. BurdenSupreme Court of the United States · 1854
- Don Lee, Inc. v. WalkerCourt of Appeals for the Ninth Circuit · 1932
3Cited by11 opinions
- Halliburton Oil Well Cementing Co. v. WalkerSupreme Court of the United States · 1946
- Pointer v. Six Wheel CorporationCourt of Appeals for the Ninth Circuit · 1949
- Lincoln Stores, Inc. v. Nashua Mfg. Co.Court of Appeals for the First Circuit · 1946
- Application of Shao Wen YuanCourt of Customs and Patent Appeals · 1951
- In Re AbramsCourt of Customs and Patent Appeals · 1951
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