Patent
   D836847
Priority
Oct 17 2016
Filed
Mar 10 2017
Issued
Dec 25 2018
Expiry
Dec 25 2033
Assg.orig
Entity
unknown
5
20
n/a
The ornamental design for an auto darkening filter for a welding helmet, as shown and described.

FIG. 1 is a top, front, right side perspective view of an auto darkening filter for a welding helmet showing my new design;

FIG. 2 is a top, rear, left side perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left elevational side view thereof;

FIG. 6 is a right elevational side view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines shown in the drawings represent portions of the auto darkening filter for a welding helmet that form no part of the claimed design.

Wu, Ziqian

Patent Priority Assignee Title
D918483, Oct 26 2018 3M Innovative Properties Co.; 3M Innovative Properties Company User interface for a welding helmet
D932107, Oct 01 2019 Lincoln Global, Inc. Auto darkening filter for a welding helmet
D957064, Oct 26 2018 3M Innovative Properties Company User interface for a welding helmet
ER347,
ER9725,
Patent Priority Assignee Title
D654224, Jul 22 2011 TECMEN ELECTRONICS CO , LTD Welding helmet
D654225, Jul 22 2011 TECMEN ELECTRONICS CO , LTD Welding helmet
D654226, Jul 22 2011 TECMEN ELECTRONICS CO , LTD Welding helmet
D654634, Jul 22 2011 TECMEN ELECTRONICS CO , LTD Welding helmet
D666981, Apr 06 2011 Sony Ericsson Mobile Communications AB Mobile phone
D710493, Jun 05 2013 TECMEN ELECTRONICS CO , LTD Respirator
D710494, Dec 16 2013 TECMEN ELECTRONICS CO , LTD Respirator
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D710546, Dec 16 2013 TECMEN ELECTRONICS CO , LTD Head belt
D716505, Dec 16 2013 TECMEN ELECTRONICS CO , LTD Air supply attachment for a head belt of a welding helmet
D716506, Dec 16 2013 TECMEN ELECTRONICS CO , LTD Air supply attachment for a head belt of a welding helmet
D732746, Jun 05 2013 TECMEN ELECTRONICS CO , LTD Welding helmet
D734558, Dec 16 2013 TECMEN ELECTRONICS CO , LTD Welding helmet
D744482, Nov 14 2014 VIDEX, INC Portable data collector
D753077, Sep 24 2014 Panasonic Avionics Corporation Display system for seatback mounting
D756998, Oct 20 2014 PANASONIC HOLDINGS CORPORATION Portable computer
D767829, Feb 04 2015 TECMEN ELECTRONICS CO , LTD Belt for welding helmet
D773423, Sep 24 2014 Panasonic Avionics Corporation Display system for seatback mounting
D774180, Mar 12 2015 TECMEN ELECTRONICS CO , LTD Respirator
D775344, Apr 07 2015 TECMEN ELECTRONICS CO , LTD Filter cartridge for welding respirator
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Feb 22 2017WU, ZIQIANTECMEN ELECTRONICS CO , LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0421340274 pdf
Mar 10 2017Tecmen Electronics Co., Ltd.(assignment on the face of the patent)
Mar 20 2023TECMEN ELECTRONICS CO , LTD TECMEN ELECTRONICS CO , LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0633530937 pdf
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