E. Edward Bozoyan received US patent #2929336, issued in March 1960, for a “valve structure.”
Alas for Mr. Bozoyan, search engines now identify him as “Bozo Van”.
As for Bozo (not Mr. Bozoyan), his history appears to be a muddle. To dip into the saga, begin with a report called “The Unusual History of Bozo the Clown – unraveling who did what when in the creation of Bozo.” Here is its beginning:
Most clowns are created and performed by one individual. There are exceptions, of course, such as the Harlequin, a character from the Comedia del Arte. A more contemporary exception is Bozo the Clown, who is owned, copywritten, and trademarked property of Larry Harmon. But although Mr. Harmon has done an admirable job of marketing Bozo the Clown worldwide, the story of Bozo does not begin with him. Instead, it begins at Capitol Records, in 1946….