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United States Patent	D334,940
Wolinsky	April 20, 1993

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The ornametnal design for a sight glass, as shown.

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Inventors:	Wolinsky; Robert (Springfield, IL)
Assignee:	AC & R (Chatham, IL)
Appl. No.:	07/555,746
Filed:	July 19, 1990

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Current U.S. Class:	D16/134
Field of Search:	D16/135,136,137 359/894,819 73/323,327,328,330,331,334 D28/64.6,64.7,64.2,64.3,64.4,64.1

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References Cited

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U.S. Patent Documents

1485772	March 1924	Du Pont
1501504	July 1924	Truax
3020795	February 1962	McKinney et al.
3345872	October 1967	McGinnis
3438540	April 1969	Le Roy
3936196	February 1976	Wickersheim
4162826	July 1979	Van der Belk et al.
4468095	August 1984	Meginnis
4803876	February 1989	Haynes

Primary Examiner: Word; A. Hugo
Assistant Examiner: Mortimer; Paula
Attorney, Agent or Firm: Lockwood, Alex, FitzGibbon & Cummings

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Description

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FIG. 1 is a front perspective view of a sight glass showing my invention;

FIG. 2 is a side elevational view;

FIG. 3 is an additional side elevational view thereof;

FIG. 4 is a top plan view; and,

FIG. 5 is a bottom plan view.

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