Cleaning machine

- Castex Industries, Inc.
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Description

FIG. 1 is a front perspective view of a cleaning machine showing my new design;

FIG. 2 is a front elevational view;

FIG. 3 is a left side elevational view;

FIG. 4 is a right side elevational view;

FIG. 5 is a rear elevational view;

FIG. 6 is a top plan view; and

FIG. 7 is a bottom plan view.

Referenced Cited
U.S. Patent Documents
1542262 September 1922 Morton, Jr.
4196492 April 8, 1980 Johnson et al.
4200951 May 6, 1980 Burgoon et al.
4759094 July 26, 1988 Palmer et al.
Patent History
Patent number: D316765
Type: Grant
Filed: Feb 29, 1988
Date of Patent: May 7, 1991
Assignee: Castex Industries, Inc. (Holland, MI)
Inventor: Richard F. Wulff (Maple Plain, MN)
Primary Examiner: Louis S. Zarfas
Assistant Examiner: Paula Allen
Law Firm: Price, Heneveld, Cooper, DeWitt & Litton
Application Number: 7/161,609
Classifications
Current U.S. Class: Vacuum (D32/21)