. . . "March 29, 1971 Emmett Clark is excited when a large company wants to buy his old invention. He then becomes embarrassed when he learns that they just wanted to pay him off so he wouldn't sue them at a later time. Last episode of the show as a result of the \"Rural Purge\"[1] \n* Ken Berry as Sam Jones \n* Paul Hartman as Emmett Clark \n* Jack Dodson as Howard Sprague \n* Arlene Golonka as Millie Swanson \n* Mary Lansing as Martha Clark \n* Directed by \n* Written by"@en . "Emmett's Invention"@en . . "none"@en . . "March 29, 1971 Emmett Clark is excited when a large company wants to buy his old invention. He then becomes embarrassed when he learns that they just wanted to pay him off so he wouldn't sue them at a later time. Last episode of the show as a result of the \"Rural Purge\"[1] \n* Ken Berry as Sam Jones \n* Paul Hartman as Emmett Clark \n* Jack Dodson as Howard Sprague \n* Arlene Golonka as Millie Swanson \n* Mary Lansing as Martha Clark \n* Directed by \n* Written by"@en .