Air flow filter for use in testing or treatment of the respiratory function of patients

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Description

FIG. 1 is a rear perspective view of an air flow filter for use in testing or treatment of the respiratory function of patients, showing my new design;

FIG. 2 is a front perspective view thereof;

FIG. 3 is a side elevation view thereof, the opposite side elevation being identical;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a top plan view thereof, the bottom plan view being identical; and,

FIG. 6 is a rear elevation view thereof.

Claims

The ornamental design for an air flow filter for use in testing or treatment of the respiratory function of patients, as shown and described.

Referenced Cited
U.S. Patent Documents
D267117 November 30, 1982 Rosenberg
D305934 February 6, 1990 Sone
D358213 May 9, 1995 Sutton et al.
3782083 January 1974 Rosenberg
3932153 January 13, 1976 Byrns
4113627 September 12, 1978 Leason
5035236 July 30, 1991 Kanegaonkar
5195527 March 23, 1993 Hicks
Patent History
Patent number: D441449
Type: Grant
Filed: Apr 12, 2000
Date of Patent: May 1, 2001
Assignee: RJ & VK Bird PTY LTD (Middle Park)
Inventor: John Gaskell (Dandenong)
Primary Examiner: Stella Reid
Application Number: 29/121,756
Classifications
Current U.S. Class: Filter (37) (D24/162)
International Classification: 2401;