The ornamental design for a loudspeakergrille having a perforation pattern, as shown and described.
FIG. 1 is a front elevation view of a loudspeaker grille having a perforation pattern showing our new design; and,
FIG. 2 is an enlarged fragmentary front elevation thereof.
The characteristics feature of the design resides in perforation pattern as shown on the loudspeaker grille. The broken lines indicate the environment and form no part of the claimed design.
Process for introducing a portion withdrawn from at least one production charge of annular coated catalysts K into a reaction tube of a tube bundle reactor