Pet tunnel with compression groove

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Description

FIG. 1 is a perspective view of a pet tunnel with compression groove, showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a side view thereof; and,

FIG. 4 is a bottom view thereof.

Referenced Cited
U.S. Patent Documents
D231367 April 1974 Willinger et al.
D231372 April 1974 Willinger et al.
D232036 July 1974 Willinger et al.
D241738 October 1976 Robert
D241856 October 1976 Williams
D256956 September 16, 1980 Stewart et al.
D258543 March 10, 1981 Milnar
D268213 March 8, 1983 Lovitt
D270297 August 23, 1983 Lovitt
D325111 March 31, 1992 Lovitz et al.
D347248 May 24, 1994 Franzman
D347913 June 14, 1994 Wellington et al.
D389610 January 20, 1998 Drause
419117 January 1890 Folsom
Foreign Patent Documents
239781 March 1946 SEX
19461 1908 GBX
Other references
  • Living World Habitrain Sets brochure, 1972. LaPine Scientific Company Catalog; Penetration Cylindar; #Z-9417, Jul. 1966. LaPine Scientific CompanyCatalog; #Z-9492; five circular cylinders of same diameter intersecting in sequence, Jul. 1966.
Patent History
Patent number: D402427
Type: Grant
Filed: Nov 4, 1997
Date of Patent: Dec 8, 1998
Inventor: Gregory G. Johnson (Minneapolis, MN)
Primary Examiner: Cathy Anne MacCormac
Attorney: Hugh D. Jaeger
Application Number: 0/79,968
Classifications
Current U.S. Class: Element Or Attachment (3) (D30/119)
International Classification: 3002;