Patents by Inventor Alexa Lenkin

Alexa Lenkin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Interchangeable educational writing pad
    Patent number: 5741561
    Abstract: An interchangeable educational writing pad is disclosed. The writing pad includes a double walled vinyl placemat having an opening on one side thereof. The vinyl placemat is provided with a marker attachment. A series of printed paper inserts are provided. Each insert includes a problem printed on one side and its solution on the other. The inserts are labeled front and back so that the user may insert the insert with the front facing up, solve the problem, pull out and then flip the insert, and reinsert the insert to check the correct answer.
    Type: Grant
    Filed: March 9, 1995
    Date of Patent: April 21, 1998
    Assignee: Alexa L. Smith
    Inventor: Alexa Lenkin