June 4 --- Gordon Buehrig patents the "T-top"

On this date in 1951 Gordon M. Buehrig was issued a United States patent for his ?vehicle top with removable panels?.

Gordon unsuccessfully peddled the idea to automakers, including GM. When years later he saw his top on the 1968 Chevrolet Corvette, his lawyer called GM. Gordon got a visit from a suit, who gave him a choice: Accept $10K now, or file suit and we will tie you up in court for the rest of your life. Gordon took it.