Three dimensional filter frame
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Description
Broken lines in the drawings provide environmental structure and form no part of the design to be patented.
Claims
The ornamental design for a three dimensional filter frame, as shown and described.
Referenced Cited
U.S. Patent Documents
Other references
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Patent History
Patent number: D875910
Type: Grant
Filed: Sep 7, 2018
Date of Patent: Feb 18, 2020
Assignee: 3M INNOVATIVE PROPERTIES COMPANY (Saint Paul, MN)
Inventors: Scott A. Clear (Escondido, CA), Michael S. Schuffert (Chatsworth, CA)
Primary Examiner: Sheryl Lane
Assistant Examiner: Calvin E Vansant
Application Number: 29/662,774
Type: Grant
Filed: Sep 7, 2018
Date of Patent: Feb 18, 2020
Assignee: 3M INNOVATIVE PROPERTIES COMPANY (Saint Paul, MN)
Inventors: Scott A. Clear (Escondido, CA), Michael S. Schuffert (Chatsworth, CA)
Primary Examiner: Sheryl Lane
Assistant Examiner: Calvin E Vansant
Application Number: 29/662,774
Classifications