Legal Opinion
Celotex Corp. v. Armstrong Cork Co.
District Court, E.D. Pennsylvania
Decided January 4, 1944No. 1845Published
1Opinion of the Court
KIRKPATRICK, District Judge.
This is an action for infringement of two patents both of which have to do with improvements in the construction of sound-absorbing boards for walls and ceilings. Such boards are commonly made of porous material and are usually an inch thick. The improvement of the first patent (No. 1,554,179) consists in making the boards with perforations or indentations in the surface of the material. The second patent (No. 1,554,180) claims the same type of construction in combination with boards made of fibrous material, as distinguished from boards made of pumice, cement or…
2Cases cited6 opinions
- Milcor Steel Co. v. George A. Fuller Co.Supreme Court of the United States · 1942
- Permutit Co. v. WadhamCourt of Appeals for the Sixth Circuit · 1926
- Maytag Co. v. Hurley MacHine Co.Supreme Court of the United States · 1939
- United Chromium, Inc. v. International Silver Co.Court of Appeals for the Second Circuit · 1932
- Edwin L. Wiegand Co. v. Harold E. Trent Co.Court of Appeals for the Third Circuit · 1941
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