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