Multi-stage filter
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Description
Claims
The ornamental design for a multi-stage filter, as shown and described.
Referenced Cited
U.S. Patent Documents
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Patent History
Patent number: D837965
Type: Grant
Filed: Jul 13, 2016
Date of Patent: Jan 8, 2019
Assignee: Strevior, Inc. (Livermore, CA)
Inventor: Jeffrey S. Lambertson (Livermore, CA)
Primary Examiner: Karen E Kearney
Assistant Examiner: Christian P. McLean
Application Number: 29/570,945
Type: Grant
Filed: Jul 13, 2016
Date of Patent: Jan 8, 2019
Assignee: Strevior, Inc. (Livermore, CA)
Inventor: Jeffrey S. Lambertson (Livermore, CA)
Primary Examiner: Karen E Kearney
Assistant Examiner: Christian P. McLean
Application Number: 29/570,945
Classifications
Current U.S. Class:
Element Or Attachment, Not Elsewhere Specified (D23/386)