USD240620S - - Google Patents

Description

United States Patent 240,620

Patented July 20, 1976 AUDIO-FILTER EDUCATIONAL BOARD Jack N. Holcomb, Fort Lauderdale, Fla., assiguor to National Intelligence Academy Filed Oct. 15, 1974, Ser. No. 514,900

Tenn of patent 14 years Int. Cl. D1907 US. Cl. Dl9-64 Des. 240,620 Page 2 of 2 FIG. I is a front perspective view of an audio-filter educational board showing my new design;

FIG. 2 is a left front perspective view thereof shown on a slightly reduced scale; and

FIG. 3 is a rear perspective view thereof.

I claim:

The ornamental design for an audio-filter educational board, as shown and described.

References Cited UNITED STATES PATENTS 3/1964 Seaver D19--6O OTHER REFERENCES Lafayette catalog 730, 1973, p. 210, Lafayette 10 in IC kit at middle of page; Lafayette 80 in 1 kit at bottom of page.

JOEL STEARMAN, Primary Examiner C. A. RADEMAKER, Assistant Examiner

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