Legal Opinion
Warren Webster & Co. v. C. A. Dunham Co.
Court of Appeals for the Eighth Circuit
Decided September 19, 1910No. 3,315PublishedCited by 8 opinions
Appeal from the Circuit Court of the United States for the Southern District of Iowa. Bill by Warren Webster & Co. against the C. A. Dunham Company. Decree for defendant, and complainant appeals.
1Opinion of the Court
SANBORN, Circuit Judge.
This case involves the validity of letters patent No. 454,964, issued June 30, 1891, for an improvement in a steam-heating apparatus, the single claim of which reads in this way:
“In a steam-heating system, the combination with a steam pipe leading from the boiler, a radiating system connecting with the steam pipe, and a return pipe connecting with the lower part of a radiating system, of a thermostatic steam trap situated in the connection between the radiating system and the return pipe, all substantially as and for the purpose specified.”
Prior to 1882 the steam in a…
2Cases cited10 opinions
- Miller v. Eagle Manufacturing Co.Supreme Court of the United States · 1894
- Potts v. CreagerSupreme Court of the United States · 1895
- National Hollow Brake-Beam Co. v. Interchangeable Brake-Beam Co.Court of Appeals for the Eighth Circuit · 1901
- Hobbs v. BeachSupreme Court of the United States · 1901
- Roberts v. RyerSupreme Court of the United States · 1875
5 more not listed; retrieve them via the Exa API.
3Cited by8 opinions
- Trane Co. v. Nash Engineering Co.Court of Appeals for the First Circuit · 1928
- Fernandez v. PhillipsCourt of Appeals for the Ninth Circuit · 1943
- Troy Wagon Works Co. v. Ohio Trailer Co.Court of Appeals for the Sixth Circuit · 1921
- Crown Cork & Seal Co. v. Sterling Cork & Seal Co.District Court, N.D. Ohio · 1913
- Backstay Machine & Leather Co. v. HamiltonCourt of Appeals for the First Circuit · 1920
3 more not listed; retrieve them via the Exa API.