Gas filling apparatus main body

FIG. 1 is a front elevational view of the gas filling apparatus main body of the present invention showing our new design, the rear elevational view being identical to the front elevational view;

FIG. 2 is a right-side elevational view thereof, the left-side elevational view being identical to the right-side elevational view;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a front perspective view thereof.

The broken lines shown depict portions of the gas filling apparatus main body that form no part of the claimed design.