US D1,019,997 S
Filament for light bulb
Song Wang, Chengdu (CN)
Assigned to DONGGUAN HUIHUAN LIGHTING CO., LTD., Dongguan (CN)
Filed by DONGGUAN HUIHUAN LIGHTING CO., LTD., Dongguan (CN)
Filed on Aug. 17, 2021, as Appl. No. 29/804,031.
Term of patent 15 Years
LOC (14) Cl. 26 - 04
U.S. Cl. D26—2
OG exemplary drawing
 
The ornamental design for a filament for light bulb, as shown and described.