Background
Applegate was born in Wyncote, Pennsylvania.
Applegate was born in Wyncote, Pennsylvania.
He appeared as Richard Harrison, the boyfriend of Patty Lane, in 70 out of the 104 episodes of the Patty Duke Show, which was broadcast on American Broadcasting Company from 1963 to 1966. In the 1960s, Applegate appeared as single episode characters in a number of other popular television shows, including The Lucy Show, Daktari, and Gunsmoke. In the 1970 television season, he appeared as Willie Maxwell, a reporter, on the relatively short-lived series Nancy.
After his television career faded, Applegate became more involved with painting, a hobby that he took up to relax during the time he was working regularly on television shows.
He describes himself as a "Realist to Impressionist painter".
Applegate is an active member of the San Fernando Valley Art Club, where he served as Vice President.
