Legal Opinion
Hunt Tool Company and Louis Davis v. Richard R. Lawrence, Dailey Oil Tools, Inc., and Houston Oil Field Materials Co., Inc.
Court of Appeals for the Fifth Circuit
Decided June 10, 1957No. 16378_1PublishedCited by 31 opinions
1Opinion of the Court
TUTTLE, Circuit Judge.
This is an appeal from a judgment of the district court 1 upholding the validity of two of plaintiff-appellees’ patents and holding that they were deliberately infringed by appellants’ tool, and disposing of appellants’ counterclaim by holding their patent invalid and not infringed by appellees’ tools.
The technical problem to which the several patents and mechanisms at issue are addressed is the devising of a method for “fishing” out of an oil well an object (the “fish”), usually the “liner,” that is stuck deep down in or below the “casing”; a mere pull exerted from the…
2Cases cited3 opinions
- Consolidated Safety-Valve Co. v. Crosby Steam Gauge & Valve Co.Supreme Court of the United States · 1885
- New York Scaffolding Co. v. WhitneyCourt of Appeals for the Eighth Circuit · 1915
- Lawrence v. Hunt Tool Co.District Court, S.D. Texas · 1956
3Cited by31 opinions
- Karl Ziegler, Plaintiff-Appellant-Cross-Appellee v. Phillips Petroleum Company, Defendant-Appellee-Cross-AppellantCourt of Appeals for the Fifth Circuit · 1973
- Inglett & Company, Inc. v. Everglades Fertilizer Company, Inc.Court of Appeals for the Fifth Circuit · 1958
- The Garrett Corporation v. The United StatesUnited States Court of Claims · 1970
- Stamicarbon, N v. V. Escambia Chemical CorporationCourt of Appeals for the Fifth Circuit · 1970
- Stearns v. Tinker & RasorCourt of Appeals for the Ninth Circuit · 1957
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