I claim the ornamental design for an I-joist, as shown and described.
A portion of the disclosure of this patent document contains material which is subject to copyright protection. The copyright owner has no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office patent file or records, but otherwise reserves all copyright rights whatsoever.
FIG. 1 is a perspective view of the I-joist according to my new design;
FIG. 2 is a right-side view of the I-joist of FIG. 1, the left-side view being the mirror image thereof;
FIG. 3 is a top view of the I-joist of FIG. 1, the bottom view being the mirror image thereof; and,
FIG. 4 is a front view of the of I-joist of FIG. 1, which is identical to the rear view of the I-joist.
The design consists of the features of shape, pattern, ornament, and configuration of the I-joist as shown in the drawings. The article contains symbolic breaks. The three-dimensional features on the right and left sides of the article repeat consistently and at regular intervals throughout the length of the article. The appearance of any portion of the article between the break lines forms no part of the claimed design.