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Publication numberUSD234950 S
Publication typeGrant
Publication dateApr 22, 1975
Filing dateJun 8, 1973
Publication numberUS D234950 S, US D234950S, US-S-D234950, USD234950 S, USD234950S
InventorsRobert E. Aumann
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Audio visual teaching unit
US D234950 S
Images(1)
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Description  (OCR text may contain errors)

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.

I claim:

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