Smoke detector
Ratzlaff May 17, 1
U.S. patent number D346,981 [Application Number 07/827,966] was granted by the patent office on 1994-05-17 for smoke detector. This patent grant is currently assigned to Management Investment & Technology, Ltd.. Invention is credited to Larry R. Ratzlaff.
| United States Patent | D346,981 |
| Ratzlaff | May 17, 1994 |
Smoke detector
Claims
The ornamental design for a smoke detector, as shown and described.
| Inventors: | Ratzlaff; Larry R. (Elgin, IL) |
|---|---|
| Assignee: | Management Investment &
Technology, Ltd. (Hong Kong, HK) |
| Appl. No.: | 07/827,966 |
| Filed: | January 29, 1992 |
| Current U.S. Class: | D10/106.5 |
| Field of Search: | ;340/545,547,555,578,586,628,629,630,693 ;D10/104,106,121 ;D29/1,2,4,5 |
References Cited [Referenced By]
U.S. Patent Documents
| D260975 | September 1981 | Lam |
| D279769 | July 1985 | Thornton, Jr. et al. |
| D297219 | August 1988 | Taylor |
| D308947 | July 1990 | Downing |
| 4236822 | December 1980 | Jaretsky et al. |
Assistant Examiner: Jackson; Marcus
Attorney, Agent or Firm: McDermott, Will & Emery
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.
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