Clean room safety hood

Description

FIG. 1 is a perspective view of a clean room safety hood showing our new design, the hose shown broken away for convenience of illustration;

FIG. 2 is a left side elevational view;

FIG. 3 is a front elevational view;

FIG. 4 is a rear elevational view;

FIG. 5 is a bottom plan view; and

FIG. 6 is a top plan view.

Referenced Cited
U.S. Patent Documents
D261073 October 6, 1981 Spruill et al.
3098233 July 1963 Hoagland
3202150 August 1965 Miller
4387471 June 14, 1983 Hsu et al.
4411023 October 25, 1983 Pinson
Patent History
Patent number: D303166
Type: Grant
Filed: Aug 25, 1986
Date of Patent: Aug 29, 1989
Inventors: Wyman H. Stackhouse (Manhattan Beach, CA), Ian M. Williamson (Redondo Beach, CA)
Primary Examiner: Carmen H. Vales-Lado
Law Firm: Singer & Singer
Application Number: 6/899,898
Classifications
Current U.S. Class: D29/9