Patent
   D820478
Priority
Jun 05 2017
Filed
Jun 05 2017
Issued
Jun 12 2018
Expiry
Jun 12 2033
Assg.orig
Entity
unknown
5
5
n/a
The ornamental design for light bulb filament, as shown and described.

FIG. 1 is a perspective front View of light bulb filament;

FIG. 2 is a front View thereof;

FIG. 3 is a left side View thereof;

FIG. 4 is a rear View thereof;

FIG. 5 is a right side View thereof;

FIG. 6 is a top plan View thereof;

FIG. 7 is a bottom plan View thereof; and,

FIG. 8 is a perspective front View thereof.

Jiang, Hongkui, Gao, Yanzeng, Wu, Feng, Wu, Chenjun

Patent Priority Assignee Title
D988546, Apr 11 2022 DONGGUAN HUIHUAN LIGHTING CO., LTD. Light bulb
ER2707,
ER369,
ER3960,
ER8669,
Patent Priority Assignee Title
D410554, Oct 01 1998 Incandescent lamp
D422099, May 28 1999 Lamp
D549360, Jun 16 2006 KEETAT LIGHTING FACTORY Light bulb
D550864, Apr 23 2007 Ledvance LLC Lamp
D689215, May 14 2012 Civilight Shenzhen Semiconductor Lighting Co., Ltd. LED bulb
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May 24 2017JIANG, HONGKUIXIAMEN ECO LIGHTING CO , LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0426030532 pdf
May 24 2017WU, CHENJUNXIAMEN ECO LIGHTING CO , LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0426030532 pdf
May 24 2017GAO, YANZENGXIAMEN ECO LIGHTING CO , LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0426030532 pdf
May 24 2017WU, FENGXIAMEN ECO LIGHTING CO , LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0426030532 pdf
Jun 05 2017XIAMEN ECO LIGHTING CO., LTD.(assignment on the face of the patent)
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