Box panel stiffener for wall panel system
United States Patent D838574

Macdonald, Robert B. (London, CA)
Macdonald, Philip A. (London, CA)
Williams, Alexander K. (London, CA)
Hoy, Jonathan W. (London, CA)
Application Number:
Publication Date:
Filing Date:
Exterior Wall Systems Limited (London, Ontario, CA)
Primary Class:
Other Classes:
International Classes:
(IPC1-7): 0808
Field of Search:
D8/349, D8/354, D8/382, D8/383, D8/384, D8/403, D25/113, D25/114, D25/119, D25/120-125, D25/131, D25/136, D25/199, D21/484, D21/486, D21/500, D21/501, D21/839, D21/468, D21/470, D21/471, D21/478, D21/479, D3/10
View Patent Images:
US Patent References:
D815308Trimrail extrusion2018-04-10SchuitD25/124
D809704Housing for LED-based lighting apparatus2018-02-06KlusD26/142
20150300027CLADDING ASSEMBLY2015-10-22Day52/489.1
D732207Window frame profile2015-06-16CampbellD25/124
D666328Window sash frame reinforcement extrusion2012-08-28MortonD25/122
D666329Window sash frame reinforcement extrusion2012-08-28MortonD25/122
D561353Corner post2008-02-05AntonicD25/122
D541955Construction member2007-05-01SimkoD25/125
D457052Adjustable duct bracket2002-05-14SnyderD8/349
D437945Deck spacerFebruary, 2001MastD25/199
D432675Panel connecting and finishing stripOctober, 2000GrosfillexD25/124
D397452Window component extrusionAugust, 1998FransonD25/124
5094051Wall panel mounting system1992-03-10Miller52/235
D317513Supporting channel for wall mounted track lighting systemJune, 1991MillerD13/155

Primary Examiner:
Rivard, Jennifer
Assistant Examiner:
Ofstun, Alison M.
Attorney, Agent or Firm:
Brewer, Peter L.
Thrive IP

1. The ornamental design for a box panel stiffener for wall panel system, as shown and described.


FIG. 1 is a perspective view of a box panel stiffener for wall panel system showing our new design.

FIG. 2 is a front plan view thereof.

FIG. 3 is a rear plan view thereof.

FIG. 4 is a left side elevation view thereof.

FIG. 5 is a right side elevation view thereof.

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

FIG. 7 is a bottom plan view thereof.

The article is shown with a symbolic break in its length. The appearance of any portion of the article between the break lines forms no part of the claimed design.