Legal Opinion
Keszthelyi v. Doheny Stone Drill Co.
Court of Appeals for the Ninth Circuit
Decided May 23, 1932No. 6688PublishedCited by 9 opinions
1Opinion of the Court
WILBUR, Circuit Judge.
' This is an appeal from a final decree of the District Court in favor of appellees in a suit in equity for infringement of letters patent No. 1,474,905 issued to appellant on November 20, 1923, for a new and useful improvement in tool joints used in rotary drilling of oil wells.
In his patent specifications appellant explains that in rotary drilling the bit cutting the formation is carried at the lower end of the string of drill pipe; that in order to withdraw the bit for sharpening or replacement, it is necessary to pull up the drill pipe, uncoupling it at intervals…
2Cases cited23 opinions
- Atlantic Works v. BradySupreme Court of the United States · 1883
- White v. DunbarSupreme Court of the United States · 1886
- Smith v. NicholsSupreme Court of the United States · 1875
- Hollister v. Benedict & Burnham Manufacturing Co.Supreme Court of the United States · 1885
- Thompson v. BoisselierSupreme Court of the United States · 1885
18 more not listed; retrieve them via the Exa API.
3Cited by9 opinions
- Midland Flour Milling Co. v. BobbittCourt of Appeals for the Eighth Circuit · 1934
- Mettler v. Peabody Engineering Corp.Court of Appeals for the Ninth Circuit · 1935
- Schick Service, Inc. v. JonesCourt of Appeals for the Ninth Circuit · 1949
- Eagle v. P. & C. Hand Forged Tool Co.Court of Appeals for the Ninth Circuit · 1935
- Pevely Dairy Co. v. Borden Printing Co.Court of Appeals for the Ninth Circuit · 1941
4 more not listed; retrieve them via the Exa API.