Smoke detector
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Description
FIG. 1 is a top plan view of a smoke detector showing my new design;
FIG. 2 is a side elevational view thereof, the opposite side being a mirror image;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a top perspective view thereof.
Referenced Cited
U.S. Patent Documents
Other references
| D240120 | June 1976 | Pasquarette |
| D262868 | February 2, 1982 | Westphal |
| D262952 | February 9, 1982 | Hanig |
| D269161 | May 31, 1983 | Fenne |
| D269331 | June 14, 1983 | Fenne |
| D269332 | June 14, 1983 | Fenne |
| D271287 | November 8, 1983 | Fenne |
| D271670 | December 6, 1983 | Takai et al. |
| D275187 | August 21, 1984 | Skarman |
| D284748 | July 22, 1986 | Fenne |
| 3500368 | March 1970 | Abe |
| 3903419 | September 1975 | Lehsten |
- Graviner Fire Protection Systems Catalog, 1978, p. 2, fixed temperature detector.
Patent History
Patent number: D306409
Type: Grant
Filed: Dec 8, 1986
Date of Patent: Mar 6, 1990
Assignee: Universal Security Instruments, Inc. (Owing Mills, MD)
Inventor: Darrell Fish (Timonium, MD)
Primary Examiner: Susan J. Lucas
Attorney: Howard L. Rose
Application Number: 6/939,454
Type: Grant
Filed: Dec 8, 1986
Date of Patent: Mar 6, 1990
Assignee: Universal Security Instruments, Inc. (Owing Mills, MD)
Inventor: Darrell Fish (Timonium, MD)
Primary Examiner: Susan J. Lucas
Attorney: Howard L. Rose
Application Number: 6/939,454
Classifications
Current U.S. Class:
D10/106
