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Legal Opinion

Kelsey Heating Co. v. James Spear Stove & Heating Co.

U.S. Circuit Court for the District of Eastern Pennsylvania

Decided August 31, 1907No. 32PublishedCited by 6 opinions

In Equity. Suit for infringement of letters patent No. 476,230 for a hot-air furnace issued to W. W. Kelsey May 31, 1892. Also charging unfair competition. On final hearing.

1Opinion of the Court

ARCHBAED, District Judge.1

The patent in suit is for a hot-air furnace; the claim relied on being as follows:

“5. The combustion-chamber, C, composed of the bottom plate, a, provided with the flanges, a', a', and apertures, the shell, e, and flues, f, f, seated on said bottom plate, said flues being formed with the shoulders, f', the crown-sheet, g, resting on said shoulders, and the rods, 1, extending through the aforesaid flues and tying thereto the aforesaid bottom plate and crown-sheet, substantially as described and shown.”

The defendants challenge the validity of the invention on the…

2Cases cited12 opinions

  1. National Hollow Brake-Beam Co. v. Interchangeable Brake-Beam Co.Court of Appeals for the Eighth Circuit · 1901
  2. Hendy v. Golden State & Miners' Iron WorksSupreme Court of the United States · 1888
  3. McCormick Harvesting Mach. Co. v. C. Aultman & Co.Court of Appeals for the Sixth Circuit · 1895
  4. Boyer v. Keller Tool Co.Court of Appeals for the Third Circuit · 1903
  5. Delemater v. HeathCourt of Appeals for the Second Circuit · 1893

7 more not listed; retrieve them via the Exa API.

3Cited by6 opinions

  1. Detroit Motor Appliance Co. v. BurkeDistrict Court, D. Minnesota · 1925
  2. Burdett-Rowntree Mfg. Co. v. Standard Plunger Elevator Co.U.S. Circuit Court for the District of Eastern Pennsylvania · 1911
  3. Curry v. Union Electric Welding Co.Court of Appeals for the Sixth Circuit · 1916
  4. Spirella Co. v. Nubone Corset Co.U.S. Circuit Court for the District of Western Pennsylvania · 1910
  5. Brunswick-Balke Collender Co. v. RosattoU.S. Circuit Court for the District of Eastern Pennsylvania · 1908

1 more not listed; retrieve them via the Exa API.

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