|Publication number||USD234950 S|
|Publication date||Apr 22, 1975|
|Filing date||Jun 8, 1973|
|Publication number||US D234950 S, US D234950S, US-S-D234950, USD234950 S, USD234950S|
|Inventors||Robert E. Aumann|
|Export Citation||BiBTeX, EndNote, RefMan|
|External Links: USPTO, USPTO Assignment, Espacenet|
Des. 234,950 Patented Apr. 22, 1975 United States Patent AUDIO VISUAL TEACHING UNIT Robert E. Aumann, Rte. 1, Iron Ridge, Wis. 53035 Filed June 8, 1973, Ser. No. 368,337
Term of patent 14 years Int. Cl. D1401 US. Cl. D19-60 0 O O O O O o o O O O Fig. 2
FIG. 1 is a front elevational view of an audio visual teaching unit embodying my new design.
FIG. 2 is a bottom elevational view.
The undisclosed side, rear and top surfaces of the unit are plain and unornamented, and the rear and top surfaces of the handle member, which is of conventional thickness, are planar.
The ornamental design for an audio visual teaching unit, as shown and described.
References Cited UNITED STATES PATENTS 4/1973 Aumann 1325-4 R 3/1964 Ryan 35-9 0 OTHER REFERENCES Radio & TV News, August 1957, p. 133, TV tube tester, Model DM456, photo, upper right corner of page.
JOEL STEARMAN, Primary Examiner C. A. RADEMAKER, Assistant Examiner