Patents Assigned to Anna J. Elfelt
  • Patent number: 3994411
    Abstract: A lid for drink cups includes a drinking flap of limited circumferential extent that may be selectively pivotally opened and closed. Such drinking flap may initially be defined by frangible lateral edges in the lid and may be held in its open position by the pull tab on the flap being inserted in a slit for a straw orifice.
    Type: Grant
    Filed: April 21, 1975
    Date of Patent: November 30, 1976
    Assignee: Anna J. Elfelt
    Inventors: Walter Elfelt, James H. Scruggs