Roof stack vent

- GAF Corporation
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Description

FIG. 1 is a perspective view of a roof stack vent showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D223712 May 1972 Mason
2277982 March 1942 Hosbein
2741972 April 1956 Pryne
3345932 October 1967 Saver
3685426 August 1972 Rosa
Patent History
Patent number: D257282
Type: Grant
Filed: Feb 8, 1979
Date of Patent: Oct 7, 1980
Assignee: GAF Corporation (New York, NY)
Inventor: Luther L. Roberts (North Plainfield, NJ)
Primary Examiner: James R. Largen
Attorney: Walter C. Kehm
Application Number: 6/10,410
Classifications
Current U.S. Class: D23/153
International Classification: D2304;