Directional annular slot antenna
Luedtke , et al. September 22, 1
U.S. patent number D260,895 [Application Number 06/020,295] was granted by the patent office on 1981-09-22 for directional annular slot antenna. This patent grant is currently assigned to The United States of America as represented by Field Operations Bureau. Invention is credited to William F. Bentley, Arthur Luedtke.
| United States Patent | D260,895 |
| Luedtke , et al. | September 22, 1981 |
Directional annular slot antenna
Claims
The ornamental design for a directional annular slot antenna, as shown.
| Inventors: | Luedtke; Arthur (Marietta, GA), Bentley; William F. (Smyrna, GA) |
|---|---|
| Assignee: | The United States of America as
represented by Field Operations Bureau (Washington,
DC) |
| Appl. No.: | 06/020,295 |
| Filed: | March 14, 1979 |
| Current U.S. Class: | D14/233 |
| Current International Class: | D1403 |
| Field of Search: | ;D14/86,90 ;343/769,788 |
References Cited [Referenced By]
U.S. Patent Documents
| D227785 | July 1973 | Kaysen |
| D244140 | April 1977 | Zinichev et al. |
| 2508085 | May 1950 | Alford |
| 2834959 | May 1958 | Dorne |
| 3447159 | May 1969 | Stromswold |
Attorney, Agent or Firm: Bentley; Wm. Ferrel
Description
FIG. 1 is a top prospective view of a directional annular slot antenna, showing our new design;
FIG. 2 is top plan view; and
FIG. 3 is a side view; and
FIG. 4 is a bottom plan view.
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