Patent
   D835353
Priority
Sep 22 2017
Filed
Apr 03 2018
Issued
Dec 04 2018
Expiry
Dec 04 2033
Assg.orig
Entity
unknown
2
18
n/a
The ornamental design for a pivot knob ring for a welding helmet, as shown and described.

FIG. 1 is a perspective view showing the new design for a pivot knob ring for a welding helmet;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines showing of a welding helmet form no part of the claimed design.

Juhlin, Oskar E., Berggren, Martin A. J. M.

Patent Priority Assignee Title
D893106, Oct 26 2018 3M Innovative Properties Company Welding helmet
D901782, Oct 26 2018 3M Innovative Properties Company Welding helmet
Patent Priority Assignee Title
5302815, Jan 10 1992 Sperian Welding Protection AG Light protection apparatus comprising an electrically controllable light protection filter element
6161225, Apr 30 1998 Shield structure of helmet
9596902, May 30 2014 3M Innovative Properties Company Earmuff accommodating welding shield
162734,
179955,
183739,
211324,
D320336, Jan 16 1987 Southco, Inc Knob for locks or the like
D340546, Feb 08 1991 Shoei Kako Kabushiki Kaisha Helmet
D465241, Sep 28 2001 Towbow Pencil Co., Ltd. Tape dispenser
D467489, Mar 28 2001 Concordia Investment Partners, Inc. Knob
D517745, Nov 12 2004 3M Innovative Properties Company Chin portion of welding helmet visor
D584008, Nov 15 2007 3M Innovative Properties Company Welding helmet front opening
D592811, Nov 15 2007 3M Innovative Properties Company Welding helmet collar portion
D668001, Mar 10 2010 3M Innovative Properties Company Front opening frame of a welding helmet
D674150, Mar 10 2010 3M Innovative Properties Company Welding helmet
D775427, Apr 26 2013 YUNNAN OUTAI SCIENCE AND TRADE CO , LTD Welding helmet
D793007, Feb 24 2016 NINGBO GEOSTAR PHOTOELECTRIC TECHNOLOGY CO , LTD Welding helmet
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Apr 03 20183M Innovative Properties Company(assignment on the face of the patent)
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