Patent
   D635721
Priority
Jan 13 2010
Filed
Jan 13 2010
Issued
Apr 05 2011
Expiry
Apr 05 2025
Assg.orig
Entity
unknown
31
7
n/a
The ornamental design for welding mask, as shown and described.

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

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Cheng, Chen-San

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Patent Priority Assignee Title
20080060102,
D398421, Dec 12 1995 3M Innovative Properties Company Protective helmet
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D585604, May 02 2008 WALTER SURFACE TECHNOLOGIES INCORPORATED Welding helmet
D586956, Mar 31 2008 Otos Tech Co., Ltd. Welding mask
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Dec 29 2009CHENG, CHEN-SANPolison CorporationASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0238980048 pdf
Jan 13 2010Polison Corporation(assignment on the face of the patent)
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