USD220622S - Modular building block unit - Google Patents

Description

Des. 220,622 Patented May 4, 1971 United States Patent Oflficc MODULAR BUILDING BLOCK UNIT Robert J. Passander, Indianapolis, Ind., assignor to Intercom Research, Inc., Indianapolis, Ind.

Filed Dec. 15, 1969, Ser. No. 20,650

Term of patent 14 years Int. Cl. D25-01 US. Cl. D182 Des. 220,622

PAGE. 4

FIG. 1 is a perspective view of a modular building block unit showing my new design;

FIG. 2 is a top plan view of the modular building block unit shown in FIG. 1;

FIG. 3 is a bottom plan view of the modular building block unit shown in FIG. 1;

FIG. 4 is a perspective view of a modified form of the modular building block unit shown in FIG. 1;

FIG. 5 is a top plan view of the modular building block unit shown in FIG. 4;

FIG. 6 is a bottom plan view of the modular building )lock unit shown in FIG. 4;

FIG. 7 is a perspective view of another modified form if the modular building block unit shown in FIG. 1;

FIG. 8 is a top plan view of the modular building block .nit shown in FIG. 7;

FIG. 9 is a bottom plan view of the modular building lock unit shown in FIG. 7;

'FIG. 10 is a perspective view of another modified form f the modular building block unit shown in FIG. 1;

FIG. 11 is a top plan view of the modular building block unit shown in FIG. 10; and

FIG. 12 is a bottom plan view of the modular building block unit shown in FIG. 10.

My invention is characterized by the provision of a rectangularly shaped building block unit having at least one core extending therethrough and provided with pairs of juxtapositioned projections and recesses on at least one of its side faces.

I claim:

The ornamental design for a modular building block unit, as shown and described.

References Cited UNITED STATES PATENTS D. 198,527 6/1964 Long D182 1,338,468 4/ 1920 Tsanoff. 3,430,403 3/1969 Muse.

A. HUGO WORD, Primary Examiner

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