Filter
FIG. 1 is a top plan view of a filter showing my new design; the bottom being the same as the top shown; 
     FIG. 2 is an end elevational view thereof, the opposite end being the same as the end shown; 
     FIG. 3 is a side elevational view thereof, the opposite side being the same as the side shown; 
     FIG. 4 is an enlarged fragmentary top plan view thereof; and 
     FIG. 5 is a cross sectional view taken on line 5--5 of FIG. 4. 
     It is to be understood that the wire mesh is continuous through out the area indicated in FIGS. 1 and 4.