Building block

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Description

FIG. 1 is an isometric view of a building block according to the invention;

FIG. 2 is a side elevation of a building block according to the invention;

FIG. 3 is a top plan view of a building block according to the invention; and

FIG. 4 is an end elevation of a building block according to the invention.

Referenced Cited
U.S. Patent Documents
1953154 April 1934 Cram
4016693 April 12, 1977 Warren
Other references
  • Architectural Precast Concrete, .COPYRGT.1973, p. 54, FIG. 3.3.17.
Patent History
Patent number: D276077
Type: Grant
Filed: Sep 29, 1982
Date of Patent: Oct 23, 1984
Inventors: John N. Rassias (Boca Raton, FL), Cecily M. Clark (New York, NY)
Primary Examiner: A. Hugo Word
Law Firm: Buell, Blenko, Ziesenheim & Beck
Application Number: 6/428,883
Classifications
Current U.S. Class: D25/91