Unitary filter and cover for animal cages

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Description

FIG. 1 is a top plan view of a unitary filter and cover for animal cages showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side elevational view thereof, the opposite side being identical to the side shown;

FIG. 4 is an end elevational view, the opposite end being identical to the end shown; and

FIG. 5 is a top perspective view thereof.

The broken line representation of a cage is for illustrative purposes only and forms no part of the claimed design.

Referenced Cited
U.S. Patent Documents
D163377 May 1951 Feldman
2467525 April 1949 Fricke
2988044 June 1961 Adelberg et al.
3343520 September 1967 Schwarz, Jr.
3528227 September 1970 Lee et al.
3528390 September 1970 Lee
3537428 November 1970 Montgomery
3613639 October 1971 Lee et al.
3830200 August 1974 Patterson
4435195 March 6, 1984 Testone
4480587 November 6, 1984 Sedlacek
4528941 July 16, 1985 Spengler
4593650 June 10, 1986 Lattvada
4640228 February 3, 1987 Sedlacek et al.
Foreign Patent Documents
0036628 September 1981 DEX
2065440 July 1981 GBX
Other references
  • "Laboratory Animal Science", American Assoc. for Laboratory Animal Science, vol. 33, Dec. 1983, pp. 523, 580-582. "Laboratory Animal Science", Am. Assoc. for Laboratory Animal Science, vol. 34, 1984, pp. 567-568.
Patent History
Patent number: D312514
Type: Grant
Filed: Jan 20, 1987
Date of Patent: Nov 27, 1990
Assignee: Universal Filter Corp. (Hazleton, PA)
Inventor: William R. Thomas (Conyngham, PA)
Primary Examiner: James R. Largen
Assistant Examiner: Cathy Anne MacCormac
Law Firm: Eckert Seamans Cherin & Mellott
Application Number: 7/5,408
Classifications
Current U.S. Class: Element Or Attachment (3) (D30/119)