US D907,755 S
Filter for air purification
Kwi Seok Choi, Seoul (KR)
Filed by DARTECH Co., Ltd., Hwaseong-si (KR)
Filed on Apr. 9, 2019, as Appl. No. 35/507,514.
Claims priority of application No. 30-2018-0046781 (KR), filed on Oct. 11, 2018.
Int. Filing Date Apr. 9, 2019
Int. Reg. No. DM/203309
Int. Reg. Date Apr. 9, 2019
Int. Reg. Pub. Date Oct. 18, 2019
Term of patent 15 Years
LOC (13) Cl. 23 - 04
CPC F04D 25/08 (2013.01)
U.S. Cl. D23—365
OG exemplary drawing
 
The ornamental design for a filter for air purification, as shown and described.