Four cavity building block

- Lithibar Matik, Inc.
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Description

FIG. 1 is a perspective view of a four cavity building block showing our new design.

FIG. 2 is an end elevational view thereof, the other end being a mirror image thereof.

FIG. 3 is a top plan view thereof.

FIG. 4 is a side elevational view thereof, the other side being a mirror image thereof.

FIG. 5 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D179185 November 1956 Branham
1887701 November 1932 Stevens
4597238 July 1, 1986 Vadala
4671039 June 9, 1987 Hunt
Patent History
Patent number: D304501
Type: Grant
Filed: Feb 17, 1987
Date of Patent: Nov 7, 1989
Assignee: Lithibar Matik, Inc. (Holland, MI)
Inventors: Emerson J. VanWassehnova (Shawnee, KS), Percy K. Sagar (Shawnee, KS)
Primary Examiner: A. Hugo Word
Law Firm: Mattern, Ware, Stoltz & Fressola
Application Number: 7/15,868
Classifications
Current U.S. Class: Perforated Or Openwork (18) (D25/114)