Six cavity building block

- Lithibar Matik, Inc.
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Description

FIG. 1 is a perspective view of a six 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 bottom plan view thereof.

FIG. 5 is a side elevational view thereof, the other side being a mirror image 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: D304500
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: 7/15,867
Classifications
Current U.S. Class: Perforated Or Openwork (18) (D25/114)