Embossed acoustical ceiling panel

- USG Interiors, Inc.
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Description

FIG. 1 is a top plan view of an embossed acoustical ceiling panel showing my new design;

FIG. 2 is an end elevational view thereof; and

FIG. 3 is a sectional view thereof taken on line 3--3 of FIG. 1.

Referenced Cited
U.S. Patent Documents
D18689 October 1888 Koskul
D21825 August 1892 Deslauriers
D215588 October 1969 Hooton
3001902 September 1961 Cooke et al.
3074835 January 1963 Gordon
3583522 June 1971 Rohweder et al.
3593819 July 1971 Giraudeau
3920872 November 1975 Ollinger
4222803 September 16, 1980 Kent et al.
4711685 December 8, 1987 Hillman
Other references
  • "Acoustone Chex & Checkmate" (United States Gypsum Co.), 1984, cover page. "Auratone Designer Ceilings" (USG Acoustical Products Co.), 1984, cover et seq. "Illusion Ceiling Series" (United States Gypsum Co.), 1981, cover et seq. "Sound Control Ceilings by USG Acoustical Products Co., SA-905", 1987, cover, pp. 9, 23. "Ceilings Product Information and Technical Data" (Armstrong World Industries, Inc.), 1986, pp. cover, 2, 6-8, 11, 16, 18, 19. "Gildage 1860's", (Pinecrest), 1985, pp. 1-4.
Patent History
Patent number: D308578
Type: Grant
Filed: Mar 17, 1987
Date of Patent: Jun 12, 1990
Assignee: USG Interiors, Inc. (Chicago, IL)
Inventor: Theodore E. Hillman (Cloquet, MN)
Primary Examiner: A. Hugo Word
Assistant Examiner: Doris Clark
Attorneys: A. Lewis Worthem, Robert H. Robinson, John M. Lorenzen
Application Number: 7/26,885