Z-shaped building block
FIG. 1 is a top right side perspective view of a z-shaped building block showing my new design;
FIG. 2 is a bottom right side perspective view thereof;
FIG. 3 is a left side elevational view thereof;
FIG. 4 is a top right side perspective view of a second embodiment of a z-shaped building block showing my new design;
FIG. 5 is a bottom right side perspective view thereof;
FIG. 6 is a left side elevational view thereof;
FIG. 7 is a top right side perspective view of a third embodiment of a z-shaped building block showing my new design;
FIG. 8 is a bottom right side perspective view thereof;
FIG. 9 is a left side elevational view thereof;
FIG. 10 is a top right side perspective view of a fourth embodiment of a z-shaped building block showing my new design;
FIG. 11 is a bottom right side perspective view thereof;
FIG. 12 is a left side elevational view thereof;
FIG. 13 is a top right side perspective view of a fifth embodiment of a z-shaped building block showing my new design;
FIG. 14 is a bottom right side perspective view thereof; and,
FIG. 15 is a left side elevational view thereof.
| 106651 | August 1870 | Beidler |
| 140835 | July 1873 | Kilburn |
| 338490 | March 1886 | Cowan |
| 3196582 | July 1965 | Rosenfeld |
| 3546792 | December 1970 | Sherman |
| 65266 | September 1949 | NLX |
Type: Grant
Filed: Sep 21, 1989
Date of Patent: May 26, 1992
Inventor: John F. Lewis (Quebec J0P 1J0)
Primary Examiner: A. Hugo Word
Assistant Examiner: Doris Clark
Law Firm: Price, Heneveld, Cooper, DeWitt & Litton
Application Number: 7/410,535
