Fun selection of quality vintage earrings. Occasionally you will find patent numbers on the earring clip backings. Some of the first ear suspending wraps and wires were patented in 1858 and 1869. A screw on ear finding was patented in 1894. And more clip-on and screw in patents were awarded in the 1930’s. In 1944 Judith Mccann applied for a patent for earring designs that did not use screws or clips or anything that produced pressure. Her patent includes an ear wrap type. The patent was awarded in 1947. A patent was applied in 1962 and awarded in 1965 for an adjustable clip with threaded screw to adjust gripping force. Researching utility patents is a fun way to help date your jewelry items.