Rack for holding cards used in teaching mathematics
Latest Mortensen Educational Products, Inc. Patents:
Description
FIG. 1 is a perspective view of a rack for holding cards used in teaching mathematics showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a cross sectional view taken along line 6--6 of FIG. 3 thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is another top view taken along line 8--8 of FIG. 4 thereof; and
FIG. 9 is a rear elevational view.
Referenced Cited
U.S. Patent Documents
D55077 | May 1920 | Page |
D282989 | March 18, 1986 | Nelson |
1955340 | April 1934 | McPherson |
2763485 | September 1956 | Dial |
Patent History
Patent number: D291900
Type: Grant
Filed: Apr 1, 1985
Date of Patent: Sep 15, 1987
Assignee: Mortensen Educational Products, Inc. (Chatsworth, CA)
Inventor: Vernon J. Mortensen (Coeur d'Alene, ID)
Primary Examiner: Melvin B. Feifer
Law Firm: Wells, St. John & Roberts
Application Number: 6/718,639
Type: Grant
Filed: Apr 1, 1985
Date of Patent: Sep 15, 1987
Assignee: Mortensen Educational Products, Inc. (Chatsworth, CA)
Inventor: Vernon J. Mortensen (Coeur d'Alene, ID)
Primary Examiner: Melvin B. Feifer
Law Firm: Wells, St. John & Roberts
Application Number: 6/718,639
Classifications
Current U.S. Class:
D21/54;
Substantially Vertical (D19/90);
D/6468;
D/6474