US D334580 S
FIG. 1 is a top, front and right side perspective view of a portable vacuum unit for an automatic dampener system in offset printing showing my new design, the broken line showing of hose and nozzle are for environmental purposes only and form no part of the claimed design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a rear elevational view thereof;
FIG. 6 is a right side elevational view thereof; and,
FIG. 7 is a left side elevational view thereof.