Faultless Rubber Company nursing nipple with a "Pat July 13, 1915 July 27, 1915 March 11, 1919" inscription.
Ref: Thomas W. Miller, “Nursing-Bottle Nipple,” U.S. Patent 1,146,639 (July 13, 1915), assigned to the Faultless Rubber Company.
Margaret H. McMann, “Nipple for Nursing Bottles,” U.S. Patent 1,147,740 (July 27, 1915).
Margaret McMann, “Nipple,” U.S. Patent 1,297,207 (March 11, 1919).