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
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Patent History
Patent number: D877876
Type: Grant
Filed: Sep 7, 2018
Date of Patent: Mar 10, 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: 29/662,776
Type: Grant
Filed: Sep 7, 2018
Date of Patent: Mar 10, 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: 29/662,776
Classifications