Donald Duncan

For the U.S. Navy admiral, see Donald B. Duncan.

Donald F. Duncan, Sr.
Born	June 6, 1892
Died	May 15, 1971(1971-05-15) (aged 78)
Nationality	American

Donald F. Duncan, Sr. (June 6, 1892 – May 15, 1971) was an American entrepreneur and inventor, and founder of the Duncan Toys Company.

Donald Duncan is most commonly associated with the Yo-Yo, the commercial success and iconic status they enjoyed during the 20th century in the United States and the world being largely the result of his marketing efforts.

Duncan is often miscredited with invention of the Yo-Yo. The name Yo-Yo was a trademark of his company from 1930 until 1965, when the case Donald F. Duncan, Inc. v. Royal Tops Mfg. Co., 343 F.2d 655 (7th Cir. 1965) resulted in a federal court of appeals ruling in favor of the Royal Tops Company, asserting that (the trademark had become a part of common speech). This ruling has been widely criticized^{[citation needed]} as a miscarriage of justice by legal historians. If used as a precedent, it would imperil many other similarly successful trademarks such as Frisbee, Slinky, and Rollerblade.

Among the other companies he founded are the Good Humor mobile frozen treats franchise and a parking meter manufacturing company. Most notable among the innovations credited to Duncan is the concept of the premium incentive—a marketing tactic wherein the consumer is encouraged to collect proofs of purchase and redeem them for rewards, such as small toys or discount coupons.

He died in an automobile accident.

External links

• Duncan history page at the Official Duncan Yo-Yo Website
• Duncan Toys co. History at Funding Universe.com
• Duncan Solutions parking technologies
• Good Humor, now a subsidiary of Unilever

Persondata
Name	Duncan, Donald
Alternative names	Duncan, Sr., Donald F. (full name)
Short description	Entrepreneur
Date of birth	June 6, 1892
Place of birth
Date of death	May 15, 1971
Place of death