sentences:  It has been said that the bagel dog was invented by Milan R. Burger in Durham, North Carolina in 1980.Burger and his baker wife Sandra T. were co-owners of Temptee Bagel at the time they developed their bagel dog, and the name "Bagel Original Dog" was trademarked.However, other trademarks existed before Burger's, including Roger Pavlow, who appears to have registered the first trademark for "Bagel Dog" in 1978.