Legal Opinion
Hall v. Keller
Court of Appeals for the Fifth Circuit
Decided April 20, 1950No. 12977_1PublishedCited by 12 opinions
1Opinion of the Court
McCORD, Circuit Judge.
Jesse E. Hall, on November 5, 1940, was issued Letters Patent 2,220,237 on application Serial No. 119,246, filed January 6, 1937, for a device used to clean the walls of oil wells. The function of the device, or centralizer, is to clean from the walls of oil wells mud and other irregularities, and to condition the walls by exposing the formation, to the end that a better bond may be had with cement when it is placed around the casing. The device also holds the casing centrally in the hole or well, and thereby permits a more even and uniform distribution of the cement…
2Cases cited31 opinions
- Waterman v. MacKenzieSupreme Court of the United States · 1891
- Cochrane v. DeenerSupreme Court of the United States · 1877
- Cantrell v. WallickSupreme Court of the United States · 1886
- Morley Construction Co. v. Maryland Casualty Co.Supreme Court of the United States · 1937
- Temco Electric Motor Co. v. Apco Manufacturing Co.Supreme Court of the United States · 1928
26 more not listed; retrieve them via the Exa API.
3Cited by12 opinions
- Park-In-Theatres, Inc. v. PerkinsCourt of Appeals for the Ninth Circuit · 1951
- Hope Basket Co. v. Product Advancement Corp.District Court, W.D. Michigan · 1952
- Frank J. Abel, Individually and D/B/A Dal-Air and Frank J. Abel Trust v. Brayton Flying Service, Inc.Court of Appeals for the Fifth Circuit · 1957
- Moore v. C. R. Anthony Co.Court of Appeals for the Tenth Circuit · 1952
- Bros Inc. v. W. E. Grace Manufacturing Co.Court of Appeals for the Fifth Circuit · 1965
7 more not listed; retrieve them via the Exa API.