Respiratory filter
Description
FIG. 1 is a rear, bottom, right side perspective view of a respiratory filter showing my new design; and,
FIG. 2 is a front, top, left side perspective view thereof.
Claims
The ornamental design for a respiratory filter, as shown and described.
Referenced Cited
Patent History
Patent number: D452911
Type: Grant
Filed: Mar 6, 2001
Date of Patent: Jan 8, 2002
Assignee: Pharma Systems PS AB (Knivsta)
Inventor: Curt Danielsson (Knivsta)
Primary Examiner: Ian Simmons
Attorney, Agent or Law Firm: Burns, Doane, Swecker & Mathis, L.L.P.
Application Number: 29/138,022
Type: Grant
Filed: Mar 6, 2001
Date of Patent: Jan 8, 2002
Assignee: Pharma Systems PS AB (Knivsta)
Inventor: Curt Danielsson (Knivsta)
Primary Examiner: Ian Simmons
Attorney, Agent or Law Firm: Burns, Doane, Swecker & Mathis, L.L.P.
Application Number: 29/138,022
Classifications
Current U.S. Class:
Respirator, Vaporizer, Or Inhalation Tube (4) (D24/110);
Filter (37) (D24/162)
International Classification: 2902;
International Classification: 2902;