Legal Opinion
National Welding Equipment Co. v. Hammon Precision Equipment Co.
District Court, N.D. California
Decided September 30, 1958No. 36121PublishedCited by 10 opinions
1Opinion of the Court
ROCHE, District Judge.
This suit is based on two causes of action: (1) patent infringement and (2) unfair competition. The subject matter of this suit is gas pressure regulators, which are devices for reducing the-pressure of compressed gas in cylinders - to' -operating .levels suitable for- such i activities as oxy-acetylene welding, the administering of anesthetics, and oxygen therapy.
Defendant George L. Hammon invented the three mechanical structures and the two designs which are the basis of the five patents in suit. He assigned the inventions and the respective patent applications to his…
2Cases cited46 opinions
- Gorham Co. v. WhiteSupreme Court of the United States · 1872
- Scott Paper Co. v. Marcalus Manufacturing Co.Supreme Court of the United States · 1945
- Egbert v. LippmannSupreme Court of the United States · 1881
- Westinghouse Electric & Manufacturing Co. v. Formica Insulation Co.Supreme Court of the United States · 1924
- Schreyer v. Casco Products Corp.Court of Appeals for the Second Circuit · 1951
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3Cited by10 opinions
- Bancroft-Whitney Co. v. GlenCalifornia Supreme Court · 1966
- National Rejectors, Inc. v. TriemanSupreme Court of Missouri · 1966
- Diamond Scientific Co. v. Ambico, Inc. And Clarence Joseph WelterCourt of Appeals for the Federal Circuit · 1988
- Motorola, Inc. v. Fairchild Camera and Instrument Corp.District Court, D. Arizona · 1973
- Zandelin v. Maxwell Bentley Mfg. Co.District Court, S.D. New York · 1961
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