Infra-red radiometer

The ornamental design for an infra-red radiometer, as shown.

FIG. 1 is a right side elevational view of an infra-red radiometer showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof.

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Executed on	Assignor	Assignee	Conveyance	Frame	Reel	Doc
Oct 28 1975		Williamson Corporation	(assignment on the face of the patent)

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