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The ornamental design for a natural gas purification unit, as shown. |
FIG. 1 is a front and left side perspective view of a natural gas purification unit showing our new design;
FIG. 2 is a right side elevational view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a front end elevational view thereof; and
FIG. 6 is a rear end elevational view thereof.
Anderson, Roger J., Anderson, Jeffrey R.
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D320837, | Jan 26 1990 | McNeilus Truck & Manufacturing, Inc.; MCNEILUS TRUCK & MANUFACTURING, INC , A CORP OF MN | Hydraulic oil tank for use in cement trucks |
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