The ornamental design for an armchair, as shown and described.
FIG. 1 is a front perspective view of a chair showing my design;
FIG. 2 is a side elevational view;
FIG. 3 is an enlarged fragmentary view partly in section of a part of the
support members of applicant's invention; and
FIG. 4 is an enlarged cross-sectional view taken substantially on line 4--4
of FIG. 2.
The side of the chair not shown is a mirror image of the side shown, while
the rear of the backrest cushion is the same in appearance as the front
thereof.