Under the Lanteen Laboratories brand, Riddlesbarger operated a chain of clinics in Illinois, Wisconsin and Michigan, which were promoted through radio advertising. Riddlesbarger is believed to have been an Army Air Corps pilot during World War I. He later worked for the United States. Post Office, flying air mail starting in 1920, but was grounded in 1921 for failing to promptly report a forced landing, resulting in delay to the mail. Riddlesbarger invented a diaphragm that was successfully marketed through his firm, Lanteen Laboratories, using storefront clinics called "Medical Bureaus of Birth Control Information" and a variety of media, including radio, direct mailings to doctors, and in packages of sanitary napkins.
Lanteen Laboratories had been organized in 1928, with 90% of its stock owned by Riddlesbarger.
Lanteen sold a comprehensive line of products, including contraceptive jellies, douches, tampons and suppositories. The proceeds from Riddlesbarger"s venture went to purchase a ranch in southern Arizona which he named Lanteen Ranch, now listed on the National Register of Historic Places as Kinjockity Ranch.
Riddlesbarger commissioned Phoenix architect Edward C. Morgan to design the Pueblo Revival house and guest house, and the interior was decorated by designer and sculptor Raymond Phillips Sanderson. Riddlesbarger, through the Lanteen Arabian Foundation, bred Arabian horses at the ranch, most notably owning Antez, a famous sire originally owned by Will Keith Kellogg.
Antez sired Palominos while with Riddlesbarger.
Bamboo Harvester, who played Mister Editor in the eponymous television show, was a grandson of Antez. Although he intended to live at the ranch full-time, Riddlesbarger sold the ranch in 1946 and moved to Tucson. He had lost a substantial judgment in tax court over Lanteen"s purchase of the ranch lands and subsequent payment of the ranch to him as a dividend.
He was unsuccessfully prosecuted in 1948 for statutory rape for an alleged affair with a house servant, and left the United States shortly thereafter.
Rufus had two daughters with Fay. Legal proceedings in the 1950s indicate that Rufus settled in east Africa in what was then Tanganyika.