Patents by Inventor Ladislav Danek

Ladislav Danek 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).

  • Mechanical straw pencil
    Patent number: 4340175
    Abstract: A permanently re-usable drinking straw that is telescoped for convenient carrying by a person, and including a tubular case from each opposite end of which a straw is outwardly slidable, one straw being slid inside the other, and in an extended position the straw ends being engaged so to form a continued and elongated straw assembly.
    Type: Grant
    Filed: April 17, 1980
    Date of Patent: July 20, 1982
    Inventors: Ladislav Danek, George Spector