Appeal No. 95-4866 Application 08/179,770 apparatus having a rectangular first mold (39) which is fixed to the bed of a trailer (col. 3, lines 54-55; Figs. 1 and 2). This mold has a plenum therein (col. 9, lines 39-65; Fig. 16). Thus, the first mold (39) has, attached to the trailer, a first fixed wall having an outer substantially planar mold surface (outer surface of first mold face 41 in Fig. 16) and a second plenum face (inner surface of first mold face 41 in Fig. 16). The Willingham apparatus does not have a second fixed wall which is parallel to the first fixed wall and has an outer substantially planar mold surface and a second plenum surface, as required by all of appellant’s independent claims. Both of Willingham’s second and third molds (71 and 103; Fig. 16) are movably attached to the bed of the trailer (col. 4, lines 8-9 and 35-36). Hummelshoj discloses a concrete molding apparatus having a number of molds (5) assembled into a battery such that spaces between the molds are filled with concrete to form plate-shaped building elements (col. 2, line 65 - col. 3, line 7). The molds rest on wheeled bogies (6) which are displaceable along a wheel track which may serve for transport or as a production line (col. 3, lines 8-11). 6Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 NextLast modified: November 3, 2007