Smoke detector

Description

FIG. 1 is a perspective view of the smoke detector according to my new design;

FIG. 2 is a top view of the smoke detector according to my new design;

FIG. 3 is a side view of the smoke detector shown in FIG. 1; and,

FIG. 4 is an additional side view of the smoke detector shown in FIG. 1.

Referenced Cited
U.S. Patent Documents
D260975 September 29, 1981 Lam
D279769 July 23, 1985 Thornton, Jr. et al.
D297219 August 16, 1988 Taylor
D308947 July 3, 1990 Downing
4236822 December 2, 1980 Jaretsky et al.
Patent History
Patent number: D346981
Type: Grant
Filed: Jan 29, 1992
Date of Patent: May 17, 1994
Assignee: Management Investment & Technology, Ltd. (Hong Kong)
Inventor: Larry R. Ratzlaff (Elgin, IL)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Marcus Jackson
Law Firm: McDermott, Will & Emery
Application Number: 7/827,966
Classifications
Current U.S. Class: D10/106