Patent
   D540990
Priority
Aug 31 2005
Filed
Aug 31 2005
Issued
Apr 17 2007
Expiry
Apr 17 2021
Assg.orig
Entity
unknown
35
6
n/a
The ornamental design for a welding mask, as shown.

FIG. 1 is a perspective view showing my new design;

FIG. 2 is a front elevation view;

FIG. 3 is a rear elevation view;

FIG. 4 is a left elevation view, the right side elevation view being a mirror image thereof;

FIG. 5 is a top plan view; and,

FIG. 6 is a bottom plan view.

Huh, Moon Young

Patent Priority Assignee Title
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D742075, Jul 07 2014 Ningbo Geostar Electronics Co., Ltd.; NINGBO GEOSTAR ELECTRONICS CO , LTD Welding helmet
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D788988, Nov 26 2015 Ningbo Geostar Photoelectric Technology Co., Ltd. Welding helmet
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Patent Priority Assignee Title
D393933, Apr 10 1996 Otos Optical Co., Ltd. Welding mask
D446887, Sep 24 1999 OTOS TECH CO , LTD Welding mask
D481832, Oct 04 2002 OTOS OPTICAL CO , LTD Welding mask
D482502, May 08 2002 Otos Optical Co., Ltd. Welding mask
D482503, Oct 04 2002 OTOS OPTICAL CO , LTD Welding mask
D527849, Feb 09 2005 Otos Tech Co., Ltd.; OTOS TECH CO , LTD Welding mask
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Aug 31 2005Otos Tech Co., Ltd.(assignment on the face of the patent)
Aug 31 2005HUH, MOON YOUNGOTOS TECH CO , LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0170820373 pdf
Nov 29 2007OTOS TECH CO , LTD OTOS TECH CO , LTD CHANGE OF ASSIGNEE S ADDRESS0217310228 pdf
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