Spirograph Spirograph Spirograph is a geometric drawing toy that produces mathematical roulette curves of the variety technically known as hypotrochoids and epitrochoids. It was developed by British engineer Denys Fisher and first sold in 1965. The name has been a registered trademark of Hasbro Inc. since 1998 following purchase of the company that had acquired the Denys Fisher company. The Spirograph brand was relaunched worldwide with original product configurations in 2013 by Kahootz Toys. In 1827 English architect and engineer Peter Hubert Desvignes developed his "Speiragraph", a machine to create elaborate spiral drawings, intended to prevent bank note forgeries. The mathematician
Herman Fisher of the wooden blocks in 1934, the first to use plastic in 1950 in Queen Buzzy Bee’s wings and the creation of “National Baby Week” in the fifties. Herman Fisher Herman Guy Fisher (November 2, 1898 – September 26, 1975), was born in Unionville Pennsylvania. He is best known as the co-founder of the famous toy brand Fisher-Price. Herman G. Fisher was born in Unionville, Pennsylvania in 1898. He graduated from the Pennsylvania State University where he was a member of Sigma Pi fraternity in 1921 with a BA in Commerce and Finance. In 1930, he got together with Irving