Oxygen hood

- The Fluorocarbon Company

FIG. 1 is a perspective view illustrating the top, the rear, and right side of an oxygen hood showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a left-side elevation view thereof; and

FIG. 4 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D182394 April 1958 Adolphson
3006339 October 1961 Smith
3540446 November 1970 Dixon
3813092 May 1974 Foster
3976063 August 24, 1976 Henneman et al.
Foreign Patent Documents
107,372 May 1939 AU
Patent History
Patent number: D247720
Type: Grant
Filed: Dec 15, 1975
Date of Patent: Apr 11, 1978
Assignee: The Fluorocarbon Company (Anaheim, CA)
Inventor: Frank J. Wilhelm (Pomona, CA)
Primary Examiner: Bernard Ansher
Attorney: Louis J. Knobbe
Application Number: 5/640,505
Current U.S. Class: D24/11
International Classification: D2401; D2499;