|Publication number||USD163085 S|
|Publication date||May 1, 1951|
|Filing date||Jul 8, 1950|
|Publication number||US D163085 S, US D163085S, US-S-D163085, USD163085 S, USD163085S|
|Inventors||Katherine V. Bishop|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (10)|
|External Links: USPTO, USPTO Assignment, Espacenet|
May 1, 1951 K. v. BISHOP SET OF SECTIONAL EDUCATIONAL TOY BLOCKS Filed July 8, 1950 Snnentor war/7 5mm: M 5/5HUP (Ittorneg Patented May 1, 1951 Des. 163,085
UNITED STATES PATENT OFFICE SET OF SECTIONAL EDUCATIONAL TOY BLOCKS To all whom it may concern:
Be it known that I, Katherine V. Bishop, a citizen of the United States, residing in San Gabriel, in the county of Los Angeles and State of California, have invented a new, original, and ornamental Design for a Set of Sectional Educational Toy Blocks, of which the following is a specification, reference being had to the accompanying drawing, forming part thereof.
Fig. 1 is a plan view of a set of sectional educational toy blocks, showing my new design.
Fig. 2 is a perspective view of one of the blocks of the group shown in Fig. 1.
The ornamental design for a set of sectional educational toy blocks, substantially as shown.
KATHERINE V. BISHOP.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 163,912 Birmeli June 1, 1875 777,268 Thompson Dec. 13, 1904 1,854,999 Ralls Apr. 19, 1932 2,310,800 Manhart' Feb. 9, 1943 FOREIGN PATENTS Number Country Date 5,539 Great Britain 1887
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US2701423 *||Feb 1, 1952||Feb 8, 1955||Merrill Albert H||Educational device with interfittable problem and answer members|
|US2860237 *||Jul 11, 1956||Nov 11, 1958||Cell Ceiling Inc||Cellular diffusion panel|
|US2937874 *||Mar 25, 1959||May 24, 1960||Alfred Ellison||Arithmetic game|
|US6716033 *||Nov 3, 2000||Apr 6, 2004||Kidspark, Llc||System for teaching mathematics|
|US7771200 *||Jan 25, 2006||Aug 10, 2010||Innovative Usa, Inc.||Devices with push button-type mechanism and methods for using said devices|
|US9342995 *||May 20, 2014||May 17, 2016||Leslie Siegel||Double-sided, front-to-back-aligned, tactile graphic learning aid|
|US9454916 *||May 6, 2013||Sep 27, 2016||Andrew David Kelly||Device for early teaching of mathematics|
|US20070170650 *||Jan 25, 2006||Jul 26, 2007||Innovative Usa, Inc.||Devices with push button-type mechanism and methods for using said devices|
|US20140329209 *||May 6, 2013||Nov 6, 2014||Andrew David Kelly||Device for Early Teaching of Mathematics|
|USD757175 *||Feb 29, 2012||May 24, 2016||Spots Educational Resources—Spots for M.A.T.H.||Educational set of cards for addition and subtraction|