November 20 1923 1,474,763 Conlan Method of interconnecting electrical cords	October 21 1924 1,512,888 Haft Method of interconnecting Christmas light strings	January 5 1926 1,568,815 Eckstein Constant contact light bulb socket	December 21 1926 1,611,806 Barnett Method of interconnecting electrical cords	December 21 1926 1,611,836 Kulka Wooden ball to hold lights in position (CD Wood & NOMA)
January 18 1927 1,614,922 Haupt Double lamp socket used in NOMA Dresden lights	March 25 1930 1,751,842 Propp Method of interconnecting Christmas light cords	September 23 1930 1,776,702 Peterson Counterbalanced electric candle light holder	January 31 1933 1,895,656 Gadke Metal socket clip for Christmas lights	December 24 1935 2,025,214 Moulthrop Triple outlet socket, adapted into Christmas light strings
October 29 1935 2,018,836 Clemence Christmas light socket clip used by ClemCo	October 13 1936 2,057,078 Abrahamson Christmas light socket clip used by Paramount (Klipton)	July 12, 1938 2,123,231 Clemence Christmas light socket clip used by ClemCo	June 2 1942 2,284,788 Wolfe Solderless Christmas light socket with pass through wires
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