Patent
   D716505
Priority
Dec 16 2013
Filed
Dec 16 2013
Issued
Oct 28 2014
Expiry
Oct 28 2028
Assg.orig
Entity
unknown
18
20
n/a
The ornamental design for an air supply attachment for a head belt of a welding helmet, as shown and described.

FIG. 1 is a top, front, right side perspective view of an air supply attachment for a head belt of a welding helmet showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a left side elevational view thereof; and,

FIG. 7 is a right side elevational view thereof.

The broken lines shown in the drawings represent portions of the air supply attachment for a head belt of a welding helmet that form no part of the claimed design.

Wu, Ziqian

Patent Priority Assignee Title
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D836847, Oct 17 2016 TECMEN ELECTRONICS CO , LTD Auto darkening filter for a welding helmet
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ER9411,
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Dec 11 2013WU, ZIQIANTECMEN ELECTRONICS CO , LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0317920983 pdf
Dec 16 2013Tecmen 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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