Air filter frame set
Latest DCSTAR INC Patents:
Claims
I claim the ornamental design for an air filter frame set, as shown and described.
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Type: Grant
Filed: Oct 28, 2019
Date of Patent: Dec 7, 2021
Assignee: DCSTAR INC (New York, NY)
Inventor: Ligui He (New York, NY)
Primary Examiner: John A Voytek
Application Number: 29/711,013